Pump and Dump
Used as a term when trading with stocks, where you buy shares yourself and then start spreading
false rumors on various forums. In that
way the stocks of
small companies goes up on rumors, and you sell with a profit.
Also it can refer to one night stands.
"Do you
still got shares in that
small company?"
"No I sold that some time ago, it was just a P&D!"
OR
"Did you go on a date with that girl you met?"
"Nah, she is just white trash, so i did a P&D"