• Published on Sep 26, 2017
  • Karina & Ronald take a LIE DETECTOR TEST!!!! Find out who is telling the truth and who is lying!!!!!
    SIS vs BRO instagram @ sisvsbro_karina_ronald
    Karina has a new instagram @ kurzawa_karina
    Ronald's new instagram @ ronaldkurzawa
    Welcome to SIS vs BRO! This is where Karina and Ronald join forces to challenge each other in countless fun videos! Challenges, gaming, and more!!! Be sure to SUBSCRIBE and we will see you in the next video!!!
  • EntertainmentEntertainment

Comments • 29 792

  • Emily Garcia
    Emily Garcia 2 minutes ago


  • Brittany Solis
    Brittany Solis 49 minutes ago

    K lied she likes someone

  • RSED Payroll
    RSED Payroll Hour ago

    the funnier wan is ronald

  • uglyman stupid Sepulveda

    Ranald is more funny in bloxburg he took your food

  • Hazelyn Chacon
    Hazelyn Chacon 2 hours ago

    Karina is funnier!!!

  • Very Vanessa
    Very Vanessa 2 hours ago


  • Michelle Attema
    Michelle Attema 2 hours ago

    Katrina I is truth

  • Michelle Attema
    Michelle Attema 2 hours ago


  • Luis Arizpe
    Luis Arizpe 3 hours ago

    Karina wwwwwooooooonnnnnnn

  • Nata lie
    Nata lie 3 hours ago +1

    Find the odd one πŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒ›πŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒœπŸŒ›

  • Nata lie
    Nata lie 3 hours ago +1

    This is a dog he doesn’t have legsπŸ• 1 like =1 surgery to get him better

  • Mario Gonzales
    Mario Gonzales 3 hours ago


  • Jerry Reed
    Jerry Reed 3 hours ago

    So funny

  • Demon Girl
    Demon Girl 4 hours ago

    OMG 😲 I was soooooo 😱

  • Laurie Thompson
    Laurie Thompson 7 hours ago


  • Spandana Machavarapu
    Spandana Machavarapu 8 hours ago

    I think Ronald is more funny

  • Shawni Queen
    Shawni Queen 10 hours ago

    Karina was being true

  • Hetal Parmar
    Hetal Parmar 13 hours ago

    Who was watching this in 2018.leave a like if you are watching in 2018

  • S.Latha Kamatchi
    S.Latha Kamatchi 13 hours ago

    yes karina you have a crush on Ronald

  • ice wolf Gamer
    ice wolf Gamer 13 hours ago


  • ice wolf Gamer
    ice wolf Gamer 13 hours ago


  • ice wolf Gamer
    ice wolf Gamer 13 hours ago


  • Mesquick 2
    Mesquick 2 13 hours ago


  • Mesquick 2
    Mesquick 2 13 hours ago


  • Brixter Poe
    Brixter Poe 14 hours ago

    If you watch this is 2018 like this comment

  • Sisters Rule And Funess
    Sisters Rule And Funess 15 hours ago +1

    Lol it was funny but also very interesting because you guys lied at least once

  • Ner Malubay
    Ner Malubay 15 hours ago


  • hima bindu
    hima bindu 18 hours ago


  • Gacha lover
    Gacha lover 19 hours ago

    How come u soooooo funny????

  • Kalpana Sisode
    Kalpana Sisode 19 hours ago

    I think Karina is telling lie

  • Kaye Charlton
    Kaye Charlton 21 hour ago

    Sorry bro sis is more funny πŸ˜‚

  • Kellie Johnson
    Kellie Johnson 21 hour ago

    I think Karina is talking the truth.

  • Elena Balaci
    Elena Balaci 21 hour ago

    Ronald is much funnier than Karina

  • Parker P
    Parker P 23 hours ago

    I bet kariana picks her nose all the time

  • Jolene Brown
    Jolene Brown Day ago


  • Ahmed Aweidat
    Ahmed Aweidat Day ago

    When was the last video you made

  • orlando coral
    orlando coral Day ago

    the funniest is Ronald.

  • Sarah Rogers
    Sarah Rogers Day ago +1

    Oh Ronald yoU totally mimic my life style

  • Logan Likes
    Logan Likes Day ago +1

    Should have do like or dislike I guess dislike

  • Abem Kerod
    Abem Kerod Day ago


  • Rebekah Matthew
    Rebekah Matthew Day ago +1


  • Savannah Reed
    Savannah Reed Day ago

    Karina is more funny

  • Natalie Ponce
    Natalie Ponce Day ago

    Ronald is not funny

  • Natalie Ponce
    Natalie Ponce Day ago


  • Jason Brown
    Jason Brown Day ago


  • Jason Brown
    Jason Brown Day ago


  • Maria Ali
    Maria Ali Day ago


  • Fevelyn Baig
    Fevelyn Baig Day ago

    No its not broken its fake, DON'T BELEIVE IN THIS LIE THING. no hate just the lie detector

  • Sophie Pham
    Sophie Pham Day ago

    I ate a but ger

  • Isa Young
    Isa Young Day ago

    I think she was lying

  • Brooke Longden
    Brooke Longden Day ago


  • Fun With Elvira
    Fun With Elvira Day ago

    Comment what πŸ˜‡=

  • Aiesha Caimille Cabading

    UnspeakableGaming already used this lie detector

  • Yuridis2011
    Yuridis2011 Day ago

    Sis is lieing

  • N K
    N K Day ago

    Ronald is funnierπŸ˜‚πŸ˜‚πŸ˜‚

  • Kitty cat lover
    Kitty cat lover Day ago

    Karina is more funny

  • Burhanuddin Hakimji

    If your watching in 2050 leave a like

  • Rajshree Mahek
    Rajshree Mahek Day ago

    I say that Ronald is funnier than Karina

  • Eva Clarke
    Eva Clarke Day ago

    Ronald is more funny

  • soe win
    soe win Day ago

    I love Karina I want to kiss her because I'm a boy.

  • Sushma Goel
    Sushma Goel 2 days ago


  • Adrianna Donofrio
    Adrianna Donofrio 2 days ago

    U wanna know what i think there all liez LIEZ I TELL U LIEZ(I STILL LOVE UR VIDS SOOOOO MUCH!)

  • Black Reapa
    Black Reapa 2 days ago

    If your watching this video in 2018 like this comment

  • nicole szpernoga
    nicole szpernoga 2 days ago

    are you guys polish??

  • Kimberly Jones
    Kimberly Jones 2 days ago

    Rounld is funnier

    DERPY VU 2 days ago


  • Isabellakittycat 010609

    Ronald is more funnier

  • Caticorn Squad
    Caticorn Squad 2 days ago

    Ur both very funny

  • Lucy Donaghy
    Lucy Donaghy 2 days ago

    Ronald is more funny

  • Michael Knybel
    Michael Knybel 2 days ago


  • Fortnight Forever
    Fortnight Forever 2 days ago

    Ronald is more funny!!!!!!!!!!!!!!!!!!!!!!

  • Brotherfield
    Brotherfield 2 days ago

    Ronald you πŸ’© in your pants when you’re eight

  • Emma Strouse
    Emma Strouse 2 days ago

    I don’t think Karina realized how disgusting it was when she said are u sure I’m not your crush 🀒

  • Sultan Hakeem
    Sultan Hakeem 2 days ago


  • Mytabss Goes Boom
    Mytabss Goes Boom 2 days ago

    Both were

  • Mytabss Goes Boom
    Mytabss Goes Boom 2 days ago

    Ronald was telling the truth

  • Vidya Balachandran
    Vidya Balachandran 2 days ago

    How can Ronald have a crush on Karina? Its Ronald's own sistrr

  • The Emerald Dimension

    RONALD is funnier

  • Derrick Sam
    Derrick Sam 2 days ago

    Karina is more funny

  • alexa short
    alexa short 2 days ago

    Karina is more funny

  • geeta y
    geeta y 2 days ago

    I think Karina told the truth well she’s also my best to you wouldn’t know who I am by

  • Jay Schmidt
    Jay Schmidt 2 days ago


  • Ericka Avila
    Ericka Avila 3 days ago

    Lair lair pants on fire

  • Miguel Mendez
    Miguel Mendez 3 days ago

    do you have pink eye

  • Family fun and toys
    Family fun and toys 3 days ago

    When I was like 4ish I hide inside the door πŸšͺ then I had a diaper and pooed

  • Joe 3rd Doveran
    Joe 3rd Doveran 3 days ago

    I always watch ur video when I get out of school and plz make more fonude videos plzzzzzzzzzzzzzzzzzzzzzzzz

  • Zoa mae Dixon
    Zoa mae Dixon 3 days ago

    Karina is not lieing be-
    cause she's so pretty and Honest but I'm not sure about RONALD!!!!!!!!!!!!!!!!!

  • Kylie’s World
    Kylie’s World 3 days ago

    Ronald is way more funny than kerina

  • Mackenzie Ross
    Mackenzie Ross 3 days ago

    Karina you look cute today

  • Nathan DeHaven
    Nathan DeHaven 3 days ago

    She's not telling the truth.

  • Nakesia Hunter
    Nakesia Hunter 3 days ago

    Here is my address. Nw 32 avne

  • Nathan DeHaven
    Nathan DeHaven 3 days ago

    You're not ling

  • Sarah-Jayne Lartey
    Sarah-Jayne Lartey 3 days ago

    Keep your eyes open to night I will come for you night bye F

  • Sarah-Jayne Lartey
    Sarah-Jayne Lartey 3 days ago

    I am your biggest fan sis vs bro

  • Dorothy Salatino
    Dorothy Salatino 3 days ago

    Pumkin pach is after you

  • Hillary Dawn Strahler

    Ronald is funny h maked me laugh

  • Jenna Young
    Jenna Young 3 days ago

    I have a crush at my school!

  • Joann Playz
    Joann Playz 3 days ago

    Ronald is more funny!

  • Ethan watson
    Ethan watson 3 days ago

    Lie Marina