There are three logical meanings
1. Bowling For Soup (one of the best bands ever, they sing 1985).
2. Bull-fucking-shit
3. Boyfriends, since bf is boyfriend (apparently)
"Hey did you see that new Bfs video?"
"What there's a new one!?"
"I mean I'd never do that!"
"Bfs, dude."
"I was txtng my bfs n accdntly mixd there namez!"