SIS vs Bro instagram @ karina_vs_ronald Karina has a new instagram @ kurzawa_karina Ronald's new instagram @ ronaldkurzawa We are doing the Mystery Box challenge with SLIME ingredients... Who do you think will make a better slime?!? We are keeping or switching ingredients from mystery boxes and Ronald really needs Activator!!! Let's see if he and Karina can make an awesome slime... OUR MERCH: https://www.sisvsbro.com Facebook: https://www.facebook.com/karinavsronald/