1 definition by Gamemasta

1). A small glass ball used in childhood games and childish pranks.

2). The most disgusting sexual act possible consisting of a large basin (too collect any loose balls/bodily fluids), LOTS of lube, a waiver signed by all 5 members of the act, and a small bag of marbles. To only be attempted by trained experts/death row inmates.

3). To marble someone. The act of marbling.
1). I put marbles under her car door and she cracked her head open.

2). I was marbling the fuck out of her, but then the cops showed up.
by Gamemasta April 27, 2010
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