That girl you are really good friends and casually have sex with. She is your friend with benefits and is cool enough to see nothing wrong with that. They are down to hang out and get down and dirty.
My Slam Piece knows when i'm hanging out with the bros and when I needs a good blows
by Jammin Slam December 01, 2011
More suggestive, and therefore far more amusing, variation of politically correct, gender-neutered pansexual labels such as S.O. to refer to a sexual partner or boy/girlfriend. See also slamp, piece.
Sorry I haven't come in to work for the past month, i've been busy shagging my new slampiece full-time and couldn't walk straight.
by caffeinatrix November 08, 2002