To "jizz your pants" but a more scientiffic way to say it. To get sexual excitment without a female or male to make you cum. Cuming out of no where, or cuming when you're just horny.
Jerry: "Last night when Rachel told me she liked me, I just skeeted, she didn't even have to touch me!"
Bob: "Dude you know that you free cum?"
Bob: "Dude you know that you free cum?"
by Kaleigh Dean yo. January 24, 2009
Get the Free cummug.