The Brief: "ASL" stands for "as hell."

DEEP DIVE
“ASL” is an abbreviation for “as hell.” the expression is used to emphasize an emotion. It is used often on Twitter and TikTok.
In the early internet era, users in chat rooms and online message boards could learn more about one another by typing “ASL,” which stood for age, sex, and location.
“ASL” is generally used as an abbreviation for American Sign Language.
This still funny asl😭 pic.twitter.com/13GDjjazJ8 https://t.co/VQB0ghU97J
— ⚡️ (@Prime_VC) August 12, 2020
Y’all using “asl” instead of “as hell” pisses me off.
— Ursula. (@LeciJ_) August 12, 2020