Musical.ly

Commonly mistaken for a kid's app, musical.ly is the number one cause of the DTD (digitally transmitted disease) megacringe symptoms may include: wishing not to have anyone near your phone cuz they will mess up your "image", random impulses to dance, and a superiority complex.

Dave: Did you hear about Jen?
Davey: Yeah, she's such a bitch now that she uses Musical.ly.