Top definition
When a Mc Donalds Dollar menu Mc chicken is inserted into a Mc Double. Creating a Mc Monster. There is also a Mc Monster challenge where one cannot put down, drink or use a napkin once the contestant has started. This word originated from the Northwest of Washington.
Bill: Lets go to Mc Donalds to do the Mc Monster Challenge!
Joe: Oh god! im still recovering from the last Mc Monster
by 221krew June 08, 2010
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2
Extremely large breasts
Look at Maki's McMonsters, there huge!
by Maki Mcmonster January 17, 2009
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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3
Someone of large physical size who eats at McDonald's frequently.
We were walking out of McDonald's, when, suddenly, a McMonster driving a Ford minivan almost ran us over trying to drag race out of the drive-thru!
by Fred Murphy9999 August 31, 2010
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Golden Shower Plush

He's warmer than you think.

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