PPP stands for Potential Pussy Payout. It is a simple measure of the value of an action when considering the possibility of getting pussy. Often used to justify otherwise undesirable actions.
friend: i signed up to volunteer for a cultural dance group to perform at the senior center. it's gonna suck balls
me: why would you do that? what is the PPP?
friend: theres a really cute girl also on the dance group that i'm gonna get with. makes it worth it.