Top definition
1. Last name given to someone who is completely epic.
2. This title can be self proclaimed or given by a friend or friends. Unless one has experienced a McBeastin, one may not name a McBeastin.
Megan Mcbeastin is the coolest person around!
by That Kid, December 31, 2008
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Cleveland Steamer Plush

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

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