Mugsi

An Acronym for McMaster University's gateway system in which causes physical and mental stress on its' students.

Most Useless Gateway System Invented.

Sarah had to use MUGSI yesterday, which caused her to smash her laptop.

by sweetmama. June 12, 2011

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Mugsy

To unknowingly slip Molly into a beverage just to watch what happens

Joey’s been real down lately. I’m going to mugsy him and see if it cheers him up.

by Steelone44 August 04, 2018

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Mugsy

The superior brother. Brother of Cuphead. His plush my be derpy but at least he didn't gamble there souls against Satan himself.

"You know who Mugsy is?"
"You mean the better brother?"
"Yeah him!"

by InkSansGirlYT March 26, 2022

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Mugsy

An person above god himself. Someone people pray to.

Eg. Nikola Tesla will follow mugsy

by Leonteje May 15, 2018

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Mugsie

A picture taken of your favourite mug that is planned to be uploaded to Facebook, Myspace or any other sort of social networking website. You can usually see the person's favourite mug sitting where they like it most. When posted it is usually tagged with #mugsie. It is optional for the mug to be full or empty.

Bill: What was you doing Tom?

Tom: I was taking a Mugsie Bill, Wonna see?

Bill: My Gosh Tom! That is the best Mugsie I've ever seen!

by KangerooJ52 February 20, 2014

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