Dumb Mama TikTok

Alright, listen up, genius. The joke is that yo mama is so dumb that she thinks TikTok, which is a social media app for sharing videos, is an "alarm setup". This means she is so technologically impaired that she doesn't know what TikTok actually is and confuses it with something else entirely. Congrats, you are now slightly smarter than the author, which is not saying much.