As 2019 comes to a close we take a look at four things that broke the internet from teenage climate activist Greta Thunberg to a number of online challenges. The list is both varied and interesting. The four major trends se discuss here are the Bottle Cap Challenge, Great Thunberg, Kiki Challenge and Hum Fit Toh India Fit challenge.Politicians, actors, sportspersons and the general public took part in the online changes, which made them go viral. Ofcourse, some of these challengers turned out to be risky too, like the Kiki Challenge, where people attempting it got injured.