A shit taken after a night of hard drinking that is particularly difficult to deal with. Unlike the traditional morning-after shit (which is an even-flow of black, smooth tar), the Tough Mudder’s consistency is that of mud mixed with clumps of ribs and chicken wings that act as grappling hooks inside the anus. Putting a foot up on the tub and screaming as though in labor is a typical method of dealing with this difficult shit. Not to be confused with the Labatt Splats.
"I had a Tough Mudder this morning that nearly killed me. I was on the can for a good hour AND I got a nose-bleed while pushing..."
by Ernest Saves Hemmingway III August 31, 2012
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A Dutch Rudder wherein the hands of both participants are covered in feces.
Alex gave Bobby a Mudder Rudder in the change room.
by My Anus October 5, 2013
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When you're having anal sex and the person on the receiving end bleeds and shits on you're dick while you cum.
Chris: Dude this one time Sally and I were doing anal and she bled out of her asshole and she fudged my stick dude once I came.

Josh: dude no way she gave you a tuff mudder!!!!!!!!
by Notsex July 4, 2013
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Some one who likes to play in anothers ass, arse ,buthole and/or anal and get thier wank all muddy
L; man i was balls deep in your wifes ass
D; dude your a mudder
by Sweet_Lou September 7, 2006
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(n) a common term for a complete asshole. one who 'fudges mudders'. a not nice guy. typically used in place of mother fucker when young children, sensitive elderly, or your boss (especially when refering to your boss) are present
Tom: This isn't working Lisa, you're just too clingy.
Lisa: but it's Valentines Day!
Tom: Your point?
Lisa: You Mudder Fudger!
by Nina Stinkenhimer February 9, 2007
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The action of motorboating between the buttcheeks.
I motorboated her boobs last night. Oh yeah! Well I did a mudder boat in her ass!
by The J-Radman June 23, 2007
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