slip Mahoney 

Leaving a party or gathering without telling anyone, typically because of mass alcohol consumption or you no longer give a damn about what's happening at the party.

What happened to Grandma? She must have pulled a slip Mahoney!

slip Mahoney by JDex July 2, 2017

Next level Mahoney logic

1) Over-thinking something to the degree that your eventual course of action is the exact opposite of the standard approach to a problem or solution
2) Self convincing that is designed to make your solution palatable, even if it contradicts well established protocols that are evidence based

Resident1: The patient has an abscess on his back and a blood sugar in the 300s but the attending decided that he wants to bring his blood sugar down before draining the infection, just in case

Resident2: Really? The elevated blood sugar is due to the infection. Draining it should reduce the blood sugar. And the attending wants to correct this first? Wow, that's some next level Mahoney logic.

Next level Mahoney logic by BCH Resident November 16, 2011

dirty mahoney 

The act of teabaggin a girl (preferably passed out)...nuts on mouth, and sitting full force on her face stuffing her nose into ure asshole

I brought that bitch back to my house and gave her the dirty mahoney.

dirty mahoney by adam krej January 29, 2008

phoney mahoney 

A term that means "Fake Irish" or "Wannabe Irish" concering and person who wants to be Irish but is not or an american bar that wants to be like an irish pub but is not. It is made up of the two word "Phony" which means fake and "Mahoney" which is a common Irish last name.

Man: That american pub on the up the street is such a Phoney Mahoney!

phoney mahoney by Popgun129 March 12, 2005

Balls Mahoney 

when one sticks his balls in (tea bags) a girl's asshole.

did you "Balls Mahoney" her ass last night?

Balls Mahoney by Douglas L. Jeffreys August 17, 2008

phoney mahoney 

a false irish bar manufactured for caucasians to consume vast quantities of liquor in.

Man, why do you go to Johnny O'Hagans in Chicago, it is such a phoney mahoney

phoney mahoney by Chad Udell April 30, 2003

O'Mahoney

O'Mahoney is an extemely AWESOME last name only givinto people who are AWESOME!! people with the last name O'Mahoney are all awesome and they are very intelegint. They are so cool and they get really pissed off when you leave out the appostraphy.. god damn it annoying

O'Mahoney's are an unique and they are awesome creatures

O'Mahoney by O'Mahoneyrocksyoursocks:) August 13, 2011