Slang for male prisoners who engage in anal sex acts. Can also be used to describe activies that group of free men would partake in if no females were present.
Eric's wife and Doug's girlfriend are both out of town this weekend, looks like those two will be playing a little prison leapfrog.

How can you tell Reid is a veteran at prison leap frog? By his limp!
by Ringer 425 June 7, 2013
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