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2.
The act of crapping your pants so badly that the stool size limits your mobility so you must STOP to do a sort of M.C. Hammer shuffle towards the restroom.
Me: "Did you see that guy shuffling down the hallway?"

Stranger: "Yeah man, either he is in a dancing mood or dudes got a mean case of the hammer pants."
by tacticalgoose28 July 10, 2012
 
1.
A style of peg-legged baggy pants, with a huge billowing crotch that went down below the knees. They were made out of this strange kind of shiny metallic parachute material.
"Can you believe people actually wore hammer pants in the 90s? What the hell was Gen X thinking?"
by Xavier January 30, 2004
 
3.
A traditional garb of impalpable masters of ceremony in the late 20th century. Often renounced when not worn as a novelty.
Person A: "Dude, hammerpants? Seriously?"

Person B: "My bad."
by Ketrinon November 20, 2009