An extremely poor performance when a good one is needed--can occur in any sport or area of endeavor.

(Shitting one's pants, usually figuratively, but could be literally)
He needed to put the ball on the green, but shanked it into the pond--his second pantsloader that round.

The politician seemed to present a cogent explanation, but came out with a real pantsloader when he thought the mike was off.
by Dr. Foo August 13, 2010
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A person who has been promoted from the status of douchebag and attained the vaunted title of pantsload. The nuts and bolts of it is the general comparison of a specific person to a pair of pants full of human shit.
"I've never seen Todd going down on the boss, but I wouldn't put it past him," stated Rodney. "Yeah, man, that dude will do anything to get ahead in the company. He's such a freaking douchebag," replied Stewart. "No Stewart," exclaimed Rodney. "He's way beyond a douchebag. Todd is a complete and utter pantsload."
by Simpth April 26, 2008
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