To commit to do something with someone, only to appease them and not actually do.
Person A: We are going to celebrate a friends' birthday tomorrow night. Join us (insert location/time).

Person B: Sounds goods, I look forward to it. See you tomorrow night.

Tomorrow night comes, Person B is not there. You, believing they would be there due to previous conversation, have been officially Paddywhacked.
by AnotherPaddyVictim January 16, 2012
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(v.) The act of being non-fatally hit by a drunk driver on St. Patrick's Day.
Jaywalking in front of the Blarney Stone Pub, I was paddywhacked by an oncoming car.
by Dylan ---DaShizz--- March 17, 2009
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Ginger was actin’ drunk and crazy before her potato soup dinner so I called her a paddywhack and left.
by Don’tbelievethehype August 01, 2020
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1. n. having sex with a fat person.
a paddywhack is like when you feel like you think about it a lot and you need to know what its like, but it also encompasses a preference for larger partners in general.

"dude you talk about these fat ladies a lot you sound like you need a paddywhack"

"girl i know he was big but he was a solid paddywhack"
by bentpin January 14, 2016
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The act of someone grabbing your dick tight, and then slapping the hell out of your balls until you cum. this can be done in several ways, such as the self Paddywhack, and the suspended Paddywhack, where you are suspended uside down and whacked.
that irish girl was crazy last night. my balls are still sore from that Paddywhack.

i gave myself a Paddywhack yesterday because my girlfriend is out of town.
by The Urban Flame February 05, 2011
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To have sex with an extremely rotund female. She must be fat and usually found in a bar around closing time.
"Hey Andy, what did you do last night?"

"Oh I went to the bar, and zip zap paddywhacked!"
by KirkG February 21, 2008
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