ROFLmouth 

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!

ROFLmouth by sharkman9k December 7, 2009

Roflcoughter 

What you do when you laugh really hard but you're sick. You cough and laugh at the same time.

My friend tried to cheer me up with a joke when i was sick. I Roflcoughtered

Roflcoughter by Solnai March 20, 2010

roflworthy 

Worthy of a rofl. ("Roll On Floor Laughing")

Dude you totally should have locked the teacher in class! It would have been roflworthy!!!

roflworthy by King Dynamo October 12, 2008

rofldouche

someone who says something funny but it's really sarcastic and douchy

todd steele-rofldouche

rofldouche by the kamal August 23, 2009

RockMouth

One who has bad teeth and cannot afford a dentist. One who looks like he brushed his teeth with barbed wire. One who has so many gaps between each tooth he would need Gap Insurance to protect himself. One who cannot even spell Dentist so that he may go and get his chompers fixed.

One who has never been to the dentist, therefore the inside of his mouth looks like he brushed w Barbed Wire, therefore nicknamed ROCKMOUTH

RockMouth by muffdiver626 October 15, 2011

Rounmouthing 

The art of verbally stroking your boss so as to seek advancement. AKA Butt kisser.

Rich did you get the promotion you were seeking. No Dave has been so busy Rounmouthing the boss that he got it.

Rounmouthing by Spanglerson June 26, 2008