A young adult male who likes to smoke marijuana in mass quantities then proceeds to fuck someone's older sister, and then comes downstairs and proclaims himself "uncle eddie".
Younger Sister: Whatchya doin?!
Young Adult Male: I'm your new uncle eddie!
by Lil Ellen August 5, 2008
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When you bust a nut in her butt and yell, "Shitter's full!"
I gave your mom the ol' Uncle Eddie last night.
by That Old Arby's wrapper January 8, 2022
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Older male, usually in his 40s, who gives off a creepy uncle vibe, hence the term "Uncle Eddie". Will take female friends to Vegas, but is often mistaken as their 'fun' loving uncle.

Nickname you give someone who you do not trust with younger children.
"No, Uncle Eddie, no!"

"thanks for the drinks, Uncle Eddie"
by nouncleedz December 30, 2014
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