a guy who steals pictures of dogs and jizzes on them
whats that guy doing with those pictures dude hes a dennis
by cory lahey December 13, 2007
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A 24 hour diner, that gives jobs to slutty girls. And hires retards to manage the place. You'll always find a creppy guy working night shift, or a lady missing some teeth and talks to her self. but the do have an amazing hot fudge brownie...
I love eating to denny's.
by Anilorac August 04, 2007
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Hey man, I think that bum is dropping a Dennys on the side of your house.
by lubbmarvin October 07, 2010
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He is GAY, he’s a no life Virgin, he liked descendants and transformers. He is 16 but acts 10, Glizzy Gladiator, Lowkey has a huge penis
Guy - “Look It’s denny, maybe he has a transformer outside”
Girl- “He has a transformer in his pants that’s for sure”

Guy-“ Wait actually, Lemme see that”
by Autobotscout August 18, 2020
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the act of doing something retarded or outright ignorant
Robin just pulled a dennis, he knocked over six priceless glass vases, man he's stupid!!!
by YEAH BABY BABY BABY August 13, 2008
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