That pair of old scraggy jogging/pyjama bottoms that u wear around the house day in day out when you're doing generally fuck all but get round to washing about once every 6 months.
shitbag! Where's my jizz pants? I can't make my cornflakes without my JIZZ PANTS!
by shamnebeedick August 19, 2009
One who jizzes in his pants before he gets them off.
"Man that Aaron guy jizzed his pants so quick, we're gonna call him jizzpants."
by IRON COCKLES February 16, 2010