A Slapping Bag is a sleeping bag that you and your girl can fit inside comfortably and still have room to play around.
by The Great Dunnski December 29, 2010
JP, "Joanie is coming over tonight."
Friend, "How big are those SLAP BAGS?!?!?!?"
JP, "Double D's!!!!"
Friend, "sand-dollar nips?"
JP, "Nope!"
Friend, "I'm so jealous."
Friend, "How big are those SLAP BAGS?!?!?!?"
JP, "Double D's!!!!"
Friend, "sand-dollar nips?"
JP, "Nope!"
Friend, "I'm so jealous."
by Slipinsider September 4, 2010
When you're driving down the road you kick up a plastic bag and it slaps the front of the vehicle behind you
by Crashnaz October 2, 2020