The line comes from Overwatch, Blizzard's hero shooter released in 2016, where Mei is a climatologist hero known for her ice based abilities and cheerful personality. One of her in game voice lines has her flustered and repeating an apology, and players quickly clipped it outside matches. It spread through gaming edits, Discord soundboards and short form video as a universal sorry reaction, and it is still used because Mei's earnest delivery works for both genuine apologies and sarcastic ones in multiplayer lobbies.