Occurs when a guy simps for a girl. He then decides to
make a move. The girl then answers that he's her "Plan B" and that she's dating someone else for now. Thus, misleading the simp to think that she's actually dating someone at the moment, and will quit
dating him soon for him.
Then, the simp discovers he's not the first to hear that answer from that girl.
Likely to happen to chubby
delusional high-schoolers.