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Large Breast on that of the human species, male of course thus the M .. Defined by a boy of the name Rubbo who has these large chesticles in that area.. He is ashamed of them and always wears more than one layer of clothing on his upper body.. usually with a beater.. he will never go into a pool.. EVER
Eddie refused to come into the pool because he would thus be embaressed by the MuBBos he was hiding.

The Rubbo boy from down the steet has some real boobies on him don't he, they should call him MUBBO.

Eddie has some big Mubbos.
by FinnSki August 04, 2009
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Jun 24 Word of the Day
An exclamation made when your friends or family are teasing you to a point where you can't handle it anymore and a hissy fit is in order.

Derived from a YouTube user's famed outburst following Britney's lackluster performance at the 2007 VMA's.
Sarah: 'OMG Susan, I can't believe you are wearing the same skirt as yesterday. Oh, and by the way, EVERYONE knows what you did with Kevin on the weekend. Plus you look a little fat, are you retaining water?'

Susan: 'LEAVE BRITNEY ALONE!'
by Billy Chickenhole September 15, 2007
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