• Published on Aug 1, 2017
  • Not using my arms to make the coolest slime ever.... is a challenge! You guys let us know who did a better job!!!
    Subscribe for more cool videos!
    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!!!
    Karina's Instagram: gamergirl_karina
    Ronald's Instagram: ronaldyoutuber
    We LOVE you guys!!!
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Comments • 15 261

  • Leilani Pvln
    Leilani Pvln Hour ago

    What is youre activator for slime???

  • Roderick Adriano
    Roderick Adriano 6 hours ago +1

    Find the difference:


  • Andy Garcia
    Andy Garcia 11 hours ago

    In 4:09 it see karina

  • Amynamirah shanholtzncorbett

    Sis won

  • Sony Bajaj
    Sony Bajaj 13 hours ago

    Ronald wins

  • Rosalie Robyn K
    Rosalie Robyn K 13 hours ago

    Karina has a flu in this video.

  • Mourisse Heart Mozo
    Mourisse Heart Mozo 14 hours ago


  • Jagoda Miedlar
    Jagoda Miedlar 14 hours ago +1

    3:03 is beautyful

  • Eliza Bi
    Eliza Bi 20 hours ago

    I'm in england

  • Eliza Bi
    Eliza Bi 20 hours ago

    It was funny when you were liking the slime

  • Aaryan Arora
    Aaryan Arora 20 hours ago

    Both slimes are wow I πŸ‘

  • Dk Lawrence Kahiwat
    Dk Lawrence Kahiwat 22 hours ago

    Karina is beautyful and cute also pretty and ronald is handsome and cute and i like all of your vid all

  • Grace Games
    Grace Games Day ago

    Lol I dont like slime but I make it for my friends

  • the s&c show
    the s&c show Day ago

    Karina won

  • granny
    granny Day ago

    it's easy for you to make cuz we give you money but not us >:(

  • Emme Cook
    Emme Cook Day ago


  • Harry Williams
    Harry Williams Day ago

    Karinas slime was the best

  • vantroich reyes
    vantroich reyes Day ago

    Both did good

  • GAMER 525
    GAMER 525 2 days ago

    K won 😊 love you!

  • Deborah Pepano
    Deborah Pepano 2 days ago

    karina wins!!!!!!!

  • Grace schwarz
    Grace schwarz 2 days ago

    1:05 you can hear Ronald say what

  • Lucy Ward
    Lucy Ward 2 days ago


  • ladybug break dance omg

    Love Karina slime

  • Shania Joe
    Shania Joe 2 days ago

    karinas slime is better

  • Eve Swaffield
    Eve Swaffield 2 days ago

    i don't get that

  • Dryden Kids
    Dryden Kids 2 days ago


  • Dryden Kids
    Dryden Kids 2 days ago


  • Dryden Kids
    Dryden Kids 2 days ago

    Marine's slime was way better

  • Sienna Conway
    Sienna Conway 2 days ago

    So funny Ronald had pink nails🀣

  • Janiah Hernandez
    Janiah Hernandez 2 days ago

    Karina but I luv sticky slime.. ehhh Karina still won! #Karinaalwayswinnomatterwhat!

  • Janis Archer
    Janis Archer 2 days ago

    Karinas won

  • Cyrine Hammoud
    Cyrine Hammoud 2 days ago

    I think Karina as Ronald's arms did good

  • Lily Mealand
    Lily Mealand 2 days ago

    Lol Karina is Ronald's arms and Ronald is Karina's arms

  • Sarah Baker
    Sarah Baker 2 days ago

    I didn’t know Ronald had nail polish on HAHA πŸ˜†

  • simi play
    simi play 2 days ago

    Ronald is a way better

  • Raul Maya
    Raul Maya 2 days ago

    Karina you won but yours look lilke pink

  • Aisha Shaikh
    Aisha Shaikh 2 days ago


  • callistabianca
    callistabianca 2 days ago

    Karina's slime is the best

  • Kerry Allington
    Kerry Allington 2 days ago

    Did ranold just say badboy πŸ˜‚πŸ˜‚πŸ˜‚

  • Helen Sta Crus
    Helen Sta Crus 2 days ago


  • Arriane Austria
    Arriane Austria 2 days ago

    go out in public like that

  • Ken Peters
    Ken Peters 2 days ago

    Bad video πŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌπŸ‘ŽπŸΌ

  • Subha Khan
    Subha Khan 2 days ago

    Karina your slime is the best

  • Jahanvi Singhal
    Jahanvi Singhal 2 days ago

    Karina is the best slime

  • Little miss _Kitten
    Little miss _Kitten 2 days ago

    Ronald won, like if you agree.

  • Western Democracy, a Luxury White Elephant

    More not my arm challenges

  • Tay simati
    Tay simati 2 days ago

    Can I have slime

  • Kristy Andrewdddffefgghbnmws

    Thanks for the hard work and i love you so muchπŸ¦„πŸ˜Ž

  • Aasath Anzaar
    Aasath Anzaar 2 days ago


  • beauty alpakka
    beauty alpakka 2 days ago

    Why are Karina's fingers so red on the top

  • Rose Grbavac
    Rose Grbavac 3 days ago

    You should do not my hands food theme

  • Kimberly Evans
    Kimberly Evans 3 days ago

    I want slime now.

  • Kimberly Evans
    Kimberly Evans 3 days ago

    This episode is HILARIOUS 🀣

  • Erin Boise
    Erin Boise 3 days ago

    Karina won

  • Erin Boise
    Erin Boise 3 days ago

    I almost peed my pants watching this

  • Zoe Doyle
    Zoe Doyle 3 days ago

    At 3:24 you can see sis nose

  • Princess Sofia P. Villar

    Karina slime win or won

  • Ny’elle Bryan
    Ny’elle Bryan 3 days ago

    IDK who won buuuuuut ronald even though it’s sticky

  • Christina Mcarthur
    Christina Mcarthur 3 days ago


  • Christina Mcarthur
    Christina Mcarthur 3 days ago

    What is slime

  • Layla S
    Layla S 3 days ago

    #i dont now

  • Mady Gartzke
    Mady Gartzke 3 days ago

    Pause at 4:08

  • Carmen Hu
    Carmen Hu 3 days ago


  • punk princess904
    punk princess904 3 days ago


  • Saima Yousaf
    Saima Yousaf 3 days ago

    Karinas team

  • Sadie Kearsley
    Sadie Kearsley 3 days ago

    Karina you've won

  • Play house Fun time
    Play house Fun time 3 days ago

    Ronald won

  • Reda l love Shehab
    Reda l love Shehab 3 days ago


  • Rivera Ryzelyn
    Rivera Ryzelyn 3 days ago

    can ihave a shout out

  • Amanda Pahlevi
    Amanda Pahlevi 3 days ago


  • Katy Reddy
    Katy Reddy 3 days ago

    At 04:13 Karina has slime in her hair!

  • Lily MacDonald
    Lily MacDonald 3 days ago


  • Blair doblas
    Blair doblas 4 days ago

    hahahahahahahahahahaha karina won

  • Viant Bong
    Viant Bong 4 days ago

    You both won!!!!!

  • Charlotte the Unicorn

    Karina slime Is better

  • Rob Galbraith
    Rob Galbraith 4 days ago

    Ronald wins

  • Isabella Dahlstrom
    Isabella Dahlstrom 4 days ago


  • πŸ’—Kawaii Paper PastelsπŸ’—

    I think Ronald did a better job when Karina was the head and Ronald was the arms cause Karina put in too much tide and put it in WAY too quickly

  • Greidys Echevarria
    Greidys Echevarria 4 days ago

    Ronald and. Karina are. Lide karina hands are in ronalds and ronalds hand is on the yaket of karina

  • Dylan Is crazy
    Dylan Is crazy 4 days ago

    Is Ronald's stepbrother Donald the duck

  • Miguel Ramirez
    Miguel Ramirez 4 days ago

    This video is so funny

  • Gimli Kantola
    Gimli Kantola 4 days ago

    Why are you so weird in this videoπŸ˜‚

  • DoUEvEngAmEGurL
    DoUEvEngAmEGurL 4 days ago

    This video was so funny XD

  • Dario Yase
    Dario Yase 4 days ago

    Karina and ronald's slime is so awesome

  • Lisa Boor
    Lisa Boor 4 days ago


  • wadhwa ananya
    wadhwa ananya 4 days ago

    It was so funny my stomach is painingπŸ˜‚πŸ˜‚πŸ˜‚πŸ˜‚

  • Lora Cholakova
    Lora Cholakova 4 days ago


  • mona saggar
    mona saggar 4 days ago

    Karina pinky colour is the way to win

  • Rose Po
    Rose Po 4 days ago

    I liked Ronald's if u all agree

  • Pottacheruva srinivas


  • ktmalikargil kargil
    ktmalikargil kargil 4 days ago

    Kerina's is better

  • Nik Baggese
    Nik Baggese 5 days ago


  • riona delrosario
    riona delrosario 5 days ago


  • Sonya Hamilton
    Sonya Hamilton 5 days ago


  • Expecto
    Expecto 5 days ago