Gummy vs Marshmallow Slime Challenge was super fun!!! We are making edible slime from real gummies and real marshmallows!!! Amazing!!! Which one do you think is better? Let us know! We both liked Marshmallow slime better! So delicious!!!! Happy July 4th to all the viewers from USA!!! And congratulations to all the winners!!! :) Subscribe for more cool videos! http://bit.ly/2nCf9L4 SIS vs BRO instagram @ sisvsbro_karina_ronald Karina has a new instagram @ kurzawa_karina Ronald's new instagram @ r
14:38
Gummy vs Marshmallow Slime Challenge was super fun!!! We ar…
85.6K viewsNov 26, 2019
FacebookSIS vs BRO Karina & Ronald
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! http://bit.ly/2nCf9L4 SIS vs BRO instagram @ sisvsbro_karina_ronald Karina has a new instagram @ kurzawa_karina Ronald's new instagram @ ronaldkurzawa Get our shirt: https://www.sisvsbro.com 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 SUBS
6:13
Not using my arms to make the coolest slime ever.... is a challeng…
20.4K viewsNov 26, 2019
FacebookSIS vs BRO Karina & Ronald
We are making GIANT crunchy slime so come along to see what crunchy slime mess we made!!! This is the most slimy and messy slime we made so far!!! Subscribe for more cool videos! http://bit.ly/2nCf9L4 SIS vs BRO instagram @ sisvsbro_karina_ronald Karina has a new instagram @ kurzawa_karina Ronald's new instagram @ ronaldkurzawa Get our shirt: https://www.sisvsbro.com Welcome to SIS vs BRO! This is where Karina and Ronald join forces to challenge each other in countless fun videos! Challenges, ga
12:59
We are making GIANT crunchy slime so come along to see what crunch…
25.7K viewsNov 26, 2019
FacebookSIS vs BRO Karina & Ronald
CAKE CHALLENGE!!!
20:38
CAKE CHALLENGE!!!
27M viewsApr 29, 2017
YouTubeSIS vs BRO
OREO SMOOTHIE CHALLENGE!!!!!
11:49
OREO SMOOTHIE CHALLENGE!!!!!
14.3M viewsSep 16, 2017
YouTubeSIS vs BRO
GUMMY vs REAL
10:03
GUMMY vs REAL
35.9M viewsFeb 18, 2017
YouTubeSIS vs BRO
CHOCOLATE vs REAL 3!!!!!!!!
15:03
CHOCOLATE vs REAL 3!!!!!!!!
4.4M viewsOct 31, 2017
YouTubeSIS vs BRO
9:04
3 COLOR TIE DYE CHALLENGE!!!!!
18.7M viewsJun 30, 2018
YouTubeSIS vs BRO
19:22
Who Knows Karina Better???
15.9M viewsDec 7, 2019
YouTubeSIS vs BRO
19:58
DON'T PRESS THE WRONG BUTTON SLIME CHALLENGE!
19.6M viewsMay 11, 2019
YouTubeSIS vs BRO
21:00
10 VIRAL SLIMES TESTED!
25.2M viewsMar 8, 2017
YouTubeKarina Garcia
8:12
3 MARKER CHALLENGE w/ my BFFs!!!
16.1M viewsMar 15, 2018
YouTubeSIS vs BRO
22:17
VANILLA vs. CHOCOLATE CAKE CHALLENGE!
20.1M viewsFeb 3, 2018
YouTubeSIS vs BRO
14:57
Twin Telepathy Slime Challenge!!!!!
28.6M viewsSep 12, 2018
YouTubeSIS vs BRO
11:09
3 Colors of Glue Slime Challenge! PART 2!!!
15.2M viewsMay 24, 2018
YouTubeSIS vs BRO
13:03
Twin Telepathy Milkshake Challenge ! !
26.4M viewsOct 17, 2018
YouTubeSIS vs BRO
14:45
Smoothie Challenge Halloween / RonaldOMG / GamerGirl
2.5M viewsOct 19, 2016
YouTubeSIS vs BRO
10:10
25 Things You Didn't Know About SIS vs BRO!!!
28.8M viewsOct 10, 2018
YouTubeSIS vs BRO
14:41
GUMMY vs CHOCOLATE Food Challenge!!!
18.9M viewsDec 6, 2017
YouTubeSIS vs BRO
11:48
Tie Dye Backpack Challenge!
19.9M viewsJul 4, 2018
YouTubeSIS vs BRO
14:35
Painting Each Other Challenge!
13.1M viewsSep 29, 2019
YouTubeSIS vs BRO
15:37
SQUISHY FOOD vs REAL FOOD Challenge!!!
10.8M viewsDec 3, 2017
YouTubeSIS vs BRO
16:01
SIRI Picks Our Slime Ingredients Challenge!!!
35.5M viewsOct 21, 2018
YouTubeSIS vs BRO
9:29
I Quit My Summer Camp!
3.7M viewsJul 5, 2018
YouTubeKarina Kurzawa
11:59
MYSTERY WHEEL OF PIZZA CHALLENGE!!!
16.2M viewsMay 12, 2018
YouTubeSIS vs BRO
9:01
Twin Telepathy Christmas Present Challenge!
10M viewsDec 7, 2018
YouTubeSIS vs BRO
15:39
Who Knows Ronald Better?!? KARINA vs DAD
17.7M viewsMay 31, 2018
YouTubeSIS vs BRO
18:02
Making Slime in a BLENDER
14.9M viewsSep 19, 2018
YouTubeSIS vs BRO
14:01
Karina Says YES to Ronald for 24 HOURS!
27.1M viewsJun 8, 2019
YouTubeSIS vs BRO
19:28
Who Knows Karina Better?!? DAD vs RONALD
17M viewsMay 10, 2018
YouTubeSIS vs BRO
See more videos
Static thumbnail place holder