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.
by sharkman9k December 07, 2009