When someone is rejected of any request (i.e. relationships, prom, etc.) before even getting the chance to formally ask.
Albert: Hey so I was thinking we could meet up at Panera this Saturday?
Alondra: Uhm, we don't really talk that much, but if this is about you asking me to prom, don't bother.
Micah: Dayumm son, I think you just got prejected!
To be told off or rejected by a girl/guy before you can evenask.
Bobby: Dude Marie told me not to even dream of asking her to prom right before I could ask.
Jason: Wow, prejected man, first case of prejection I've ever seen.