Pumpington is a slang term for sex. Whenever one talks about sex the phrase "Pumpington Yeah!" takes it's place.
Rob: "What are you going to do tonight?"
Andrew: "Enjoy myself some Pumpington Yeah!"
Rob: "Pumpington Yeah!"
Andrew: "Enjoy myself some Pumpington Yeah!"
Rob: "Pumpington Yeah!"
by Bachmayne July 15, 2008
by ChadSexington February 12, 2008