What is Jimmy Leg?
1.
an unconscious tick in the leg during sleep; may wake partner.
see also: jimmy arm
My girlfriend's got the jimmy leg! She keeps kicking me! I can't sleep!
2.
While masturbating, some men, and usually using lubricant, rub a spot on their penis that causes their leg to shake. Much like scratching a dog when getting scratched in the right way makes their leg shake.
John: Dude, I think the guy in the men's room was masturbating in the stall.
Adam: How do you know?
John: He had the jimmy leg goin and everything!
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