I'm not sure if bg was really misusing it but he’s just super late to the meme 😭 I’m pretty sure it first blew up in early 2024. basically it’s when people purposely misspell “become” as a joke. like, if a fan sees a hot idol picture they might comment “I bicome a wolf,” or if someone looks really cute, you might write “I bicome a mom.” there are tons of variations, but that’s the gist of it.