(verb) To go over-the-top on a sexual joke. A weeth usually occurs when one trys to add on to a dirty joke, but as a result, makes the joke too crude.
Person 1 - "I wonder where that guy's strong hand has been?"

Person 2 - "I heard that guy shoved his strong hand up the principal's snatch, making his hand smell like rotten cheese"

Person 1 - "Way to totally weeth that joke."
by Andy Peterson August 15, 2009
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The act of releasing weed smoke from the mouth, and inhaling the weed smoke directly in through the nostrils. Often displayed by more experienced weed connoisseurs.
"Keith has become so good at weething his hits!"
-"Too bad his name is shitty."
by Loreli Benz November 7, 2011
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Another way of saying 'With'
Peek this Streetness, never had a weekness weeth this
by Jimma March 18, 2004
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