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ROFLmouth: a condition resulting from the overuse of the muscles in the face, namely the ones involved with smiling and/or laughing. Symptoms include acute pain, tendonitis, and TMJ. ROFLmouth is usually the result of either comedic situations or the inhalation of, <ahem> certain plant extracts. (Usually some combination of the two) ROFLmouth is a combination of the acronym R.O.F.L.M.A.O (Rolling On the Floor Laughing My Ass Off) and the word mouth. It MUST be spelled with the first four letters in caps.
Holy shit! I got ROFLmouth from watching The Daniel Giuditta Progrum on Youtube!
by sharkman9k December 07, 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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