by tim johnstone May 9, 2008

Determining the size of a man's penis based upon how much of your mouth it takes up while giving a blowjob.
I've mouth measured him before, but I don't remember his penis being that big.
I'm quite pleased with the results of my mouth measure.
I'm quite pleased with the results of my mouth measure.
by Amillionaire September 14, 2010

by BootzillaBaba November 27, 2011

Dude, did you see her teeth - they were fucked up!
Yea, firecracker mouth....she won't have problems with those peanut shells...
Yea, firecracker mouth....she won't have problems with those peanut shells...
by B. Hanback December 30, 2008

Blunt Sagittarius will say what it thinks at the drop of a hat. They are known to be outspoken and bossy hence coined the term "sag mouth".
Sorry to be rude...I just have an enormous sag mouth and you can count on me to put my foot in it given the slightest available opportunity.
by Dragoi November 18, 2006

by uno531 June 22, 2008

When somebody mindlessly repeats movie quotes in attempt to sound funny or clever. It often occurs either during or after a movie. In many cases, occuring days, months or years after a movie was viewed.
Jesse: "To infinty and BEYOND!!!"
Joe: Dude, chill.
Jesse: "I'll have what she's having."
Joe: "You're such a movie mouth...."
Joe: Dude, chill.
Jesse: "I'll have what she's having."
Joe: "You're such a movie mouth...."
by theminer May 21, 2011
