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To dry hump, more or less have sex with clothes on. Mormons like to deef so that they can nut without having actual sex. Deef sessions are typically 1-3 hours. Widely known in Utah county, Utah.
Deef me?”

“How far did you go with John?” “We deefed”
“You wore jeans? That’s like the number one rule of deef! You have to wear leggings or sweats!”
by Analjames December 28, 2017
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Deef |dēf|

1. noun. Originally used to succinctly describe an instance of delicious beef. Often this is used when the item has a distractingly high level of tastiness and a full sentence is not manageable.

2. adjective. Good, excellent, or awesome. A 'y' is added to the end to create "Deefy" as necessary.
1. "That vendor on Church St. is selling some straight deef burgers."

2. "Taking shots in the library? That's deef, yo."
"That is a deefy burger, my friend."
by LingAnth October 10, 2011
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it is the male eqivalent of a queef. the male ejects air out of his penis. the "d" in deef stands for dick. it means a dick queef, or a dick fart. a deef sounds like a very high pitched fart
What is that smell? Did you just fart?

No, i deefed.
by Erich Smith April 29, 2007
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short for "default". Used to refer to one's profile pic/display pic on a social networking site
Sweet deef, dude!
by llllllllllllllllllllllll May 08, 2009
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