To poonslap is to participate in the act of courting, wooing, seducing, or otherwise inciting the interest of someone of the opposite sex; also known as poonslapping. Eventually it should lead the so-called "poonslapper" to get laid.
Dude, E-Tom is such a fucking poonslapper!
Did you read that IM conversation? Bro, that was an epic poonslap!