When you are going down on a drunk girl from a California frat party, you gently slip the gum from your mouth inside her. You then insert your cock, kind of like a ramming rod on a Civil War cannon to make sure its in their tight. She then queefs and pops the bubble gum in your face.
Justin knew this chick from the sorority house next door was down for a Bubble Gum Alley....I mean what wasn't she down for.
by Balls of Steel Froman January 04, 2010