-an acronym that stands for "pussy at prom?" It is a subtle way of asking the question that everyone wants to know the answer to, a.k.a did you get laid on prom night? It is commonly used on social networking sites such as facebook, myspace, and xanga. Can alternately stand for "penis at prom?" to accommodate a female recipient.
Tay-"Of course! Who do you think I am?"
Stacy-"Hey girl hey! Pap?"
Tracy-"I can't remember..."