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2.
A sexual act of penatration (vaginal or anal) involving an amputated limb.
I walked into the restroom at the club last night, and caught these two chicks stumping in one of the stalls.
by Madronin August 21, 2006
 
1.
Stumping is a fun way to trip someone when they are running directly behind you. It can be used as a practical escape method or a as a hilarious prank.

Right as your pursuer is directly behind you, hit the brakes and crouch down, much like the fetal position. Not being able to dodge this new obstacle, the unfortunate pursuer, still running at full speed, runs into you with his legs and finds himself a whole load of bad luck usually in the form of flying, faceplanting, public humiliation, or other injuries.
Austin: Hey Brandon, why are you all scraped up?

Brandon: I was running behind John in P.E. when he stopped and crouched down out of nowhere. I flew right over him and crashed into the blacktop.

Austin: Haha! that's called stumping. He does that to everyone.
by SuperJunior!!!!!!!! October 01, 2012
 
3.
Using the remaining stump of a amputated limb to have sex with someone.
John: Don't use that dildo...use my stump!

Heather: Oh I love you John....Give me a good stumping!!!
by The Real Shwa November 21, 2010
 
4.
Like humping—gay or straight—but sex with an especially thick penis or "log," with a girth well above the 5.5" average.
His log was as thick as her wrist and stuffed her hole tight when she was stumping him.

Him stumping me in the ass with that monster cock left me so sore I couldn't sit down for a week.
by TheCurmudgeon July 02, 2012
 
5.
The insertion of one's partially amputated limb into the sphincter of another person. It is only considered a homosexual activity when both participants are male, otherwise it is a form of pegging. synonym: Dirty Oscar.
Tom: "Ever since my girlfriend got her leg amputated, I've been totally into stumping. Is that gay?"
Scott: "Does your girlfriend have a penis?"
Tom: "Yes"
Scott: "Then yes, Tom, it is homosexual"
by lamesGee January 15, 2010
 
6.
Sexual act whereby a man's penis is inserted into the empty eye socket of a one eyed partner for physical gratification. Often utilized as a domination technique to impart a sense of total ownership over the receiving partner in BDSM circles.
John and Dave were tag teaming a girl on the dance floor when she bit John. He replied that if she didn't play nice he was going to take off her eye-patch and give her a stumping to teach her some discipline
by Captain_Awesome February 18, 2012
 
7.
Stumping : shitting into someone elses asshole. Optional : then they shit it back out.
Me and my wife did sum stumping last night , my shit was almost too soft to go into her asshole.
by Mr.Vomit666 January 26, 2011