Top Definition
A mentally retard person with down syndrome. Often seen packing your groceries or saying "HEEELLLOOOOOOOO" while you casually try to walk away quickly. Tribits are friendly and always mean well, but are often ignored in order to avoid the awkward uncounter. They enjoy flailing their arms about and shaking random people's hands. Some may even wear those little red propeller hats.
I was scared to make eye contact with the tribit, because I was scared he'd come talk to me.

The last thing I wanted to do was to show that I was friendly. That tribit sitting by me in the food court had his eye on me just waiting to lick my spoon or something.

I just watched out of the corner of my eye as he put the urinal mint in his mouth. I was going to say something but this particular tribit looked like he was capable of beating my ass.
by UmThatGuy March 05, 2013

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