Tae kwon don't 

When someone who thinks they are hot shit because they are highly ranked in a mcdojo and goes out gets in a fight and gets owned like no tomorrow.Therefore all those years of Tae kwon do becomes tae kwon don't in a matter of seconds.

Dude that bum totally kicked the shit out of that Tae kwon don't black belt

Tae kwon don't by El Grinder December 12, 2009

Ultimate Taekwondon't Break 

When you attempt to complete a 6 Brick break in front of your entire class of taekwondo students with the intent of showing off, fail the break miserably after 4 weak attempts then allow the tower of patio bricks to fall so that the impact to the ground can fracture the bricks and you aren't forced to make a 5th attempt with a hand that hurts almost as much as the dissapointment of your chubby wannabe fighter son who can do less push ups than bricks you can break.

Had the worst Ultimate Taekwondon't Break right after I opened my own Taekwondo school at the YWCA cuz my instructor thinks I'm a complete douche bag, then I tried to show off on camera with a sweet 6 brick demo break and fucked it up entirely barely breaking any. My hand hurts but I don't want everyone to laugh out loud at me and wonder why I even charge for this awful excuse for "self defense" and give my son another reason to sit on his fat lazy ass while everyone else works out.

Ultimate Taekwondon't Break by Phillip Tillman March 5, 2011

Ultimate Taekwondon't 

When a Martial Arts instructor attempts to demonstrate a technique, skill or breaking demonstration to their students and fails in a very obvious and embarrasing manner usually resulting in akward silence and lowered credibility for the instructor and the school.

Master Dennis attempted to break 6 bricks last night in class and totally failed! Even after 4 attempts he couldn't get through them all. It was a joke, what a phony. He even had the nerve to say afterward that he has never missed a break. Bet he won't do that again in front of everyone. That Fat Pussy. Thought we were supposed to be learing Ultimate Taekowndo, more like Ultimate Taekwondon't.

Example 2, Saw a great Ultimate Taekwondon't at practice tonight. Mikey tried to show us how to do that spin kick on the heavy bags and fell right on his fucking ass. That lazy fuck has no business wearing a uniform let alone a 4th degree black belt! That fat fuck!

Ultimate Taekwondon't by The Original Karate Kid March 14, 2011