2 definitions by smclife

verb - slang; to drink one or more Monster energy drink, equivalent to saying "shoot up" when referring to injecting drugs intravenously
Example 1
Guy 1: Dude, I've got a ton of homework to do tonight and 3 group meetings to go to.
Guy 2: Sounds like you need to beast up if you want to make it.

Example 2
Guy 1: You shouldn't beast up before your big presentation.
Guy 2: Why?
Guy 1: It will melt your mind.
by smclife October 7, 2010
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when a girl with very fat legs puts on a pair of Ugg boots, creating a muffin top effect around her cankle area
"Yo, Brett, check out that girls muggin tops"

"Dude, gross, I can barely stand to look at Uggs to begin with, let alone all of that leg fat pouring out of them."
by smclife February 22, 2011
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