An extremely hairy man who is sometimes mistaken as Sasquatch. He is often found with a half empty beer can in 1 hand and a lighter, which is never his own, in the other.
That crazy "Uncle Mark" is so hairy & appalling, it looks like he has a sweater on when he's really fukn topless
by Meowmeowrabbit March 28, 2018
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when you give your partner a noogie as either you, they, or the both of you climax
I gave that girl an Uncle Mark last week
Bro I just Uncle Marked your mom
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A math professor who has the odd delusion that he has any chance of winning me at backgammon!!
I rock at backgammon, i cant believe UNCLE MARK thinks he can win!
by you can just call me master! January 10, 2012
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A gay uncle Mark is the uncle everyone thinks is gay but can’t admit it to himself. He would have a funky beard and a ponytail that looked like 3 hairs on a horses ass. Typical phrase used would be “Hey mmmaaannn” When laughing he would make the sound of a gay rabbit humping another gay rabbit. Take caution when around people like this. They are easily subdued by the elusive catfish.
I would invite you all over... but I have a gay uncle Mark hangin around
by ThaGrizz408 February 8, 2020
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