'The Wrench' is where one testicle is accidentally and suddenly trapped/squeezed by the central stiching line of your trousers, after remaining in a seated/slouching postition for too long. In sufferers this causes you to involuntarily leap forward/up whilst simultaneously blurting incomplete expletives.

The Wrench can also cause nausea and extended bruising in extreme cases involving Jeans. Also sometimes caused by excessive Gugging on hot days.
I was on the Sofa watching telly the other day. As I leaned over to get the remote, I uncrossed my legs and got a really bad case of The Wrench - I was on the floor for about 15 minutes, crying like a baby trying not to throw up. One of my bollocks is now Grapefruit sized.
by Dobbalina September 6, 2010
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When you stick four fingers in your girls puss, and your thumb in her ass.

also known as:
four in the hun, one in the gun
four in the pink on in the stink.
Hey jacob, imma give stacy the wrench!
by drunkanfool June 25, 2004
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When you take your erect penis by the head softly and twist till you can't no more then hold it your penis and start softly masturbating then crank the hog flick your head and then unwind your head strong penis.
Last night I did the wrench then let it rip cum in all in Jen's pussy.
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The same as a ratchet, but what you whisper to your friend when they are in your presence so they don't know what you're saying.

Derived from the word ratchet, which is derived from the tool, hence wrench.

Can be used singular or plural
Fuck, too many wrenches up in here.

That wrench is asking to get bitch slapped.
by Shock Smoove September 24, 2012
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A penis so large that when hanging from its pubis it resembles a wrench hanging from a tool belt.
Mr. Marcus, Lexington Steele, John Holmes.
Guys - Look at Mr. Marcus' wrench. <channel changes>
<Stu returns to room from washroom>
Stu - Hey, put it back to 599 I want to see his wrench, too.
by Barney Killarney September 17, 2007
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Wrench is a amazing person, he would literally blow up anything and anyone for you. His personality is really humorous and makes a lot of dirty jokes. Many people don’t like his taste in fashion, but it fits Him. He’s like a porcupine, cute but very destructive. Nobody knows about his past, but he has very supportive friends. But Sledgehammers, are his best friend.
Yeah, this is Wrench from WatchDogs2
by reggie.edits September 4, 2019
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(v.) when someone throws a "wrench in the works" and changes something at the last minute, which messes up your already finalized plans, they have "wrenched" you.
my friend and i were all set to go to the movie tonight, but then our other friend asked us at the last minute not to go see that specific movie without her, and if we would wait until next week for her. she wrenched us!
by jcheesew December 20, 2009
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