The act of a male masturbating or engaging in sexual activities involving the penis while orbiting in outer space. As the male ejaculates, gravity keeps some semen from leaving the penis, thus remaining stuck in the penis. The penis is then space jammed.
Jackie: Yo Gregory! I heard you and Janet just got back from the moon, how was it?
Gregory: Pretty sweet man but we tried to fuck in the cargo bay of the space ship and I got so space jammed, it took me forever to get it out.
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