A hooker or a hook-up girl that was used the night before. She is usually seen looking for a ride. Could be partially dressed or a little messy with the personal hygene. Lipstick is smeared, wearing a mans shirt, stinky..
The pump & dump was seen hitch hiking trying to get a ride back to town.
by Ruby Wells November 05, 2007
Dating someone until they give up some sex then breaking up the next day.
Sally is home crying because Jeff did the old pump & dump and she aint got a date.
by Little Ugly Eddie March 05, 2008