mouth boner
A shit eating uncontrollable grin. It is best explained by the guy in the Disarono commercial after seeing the chick deep throat the ice cube.
Did you see the mouth boner on Brent's face when he was watching the Jude Law movie?
Mouth boner
That tingly feeling you get in your mouth when you think of a certain food or start eating something you've been thinking about eating.
Person 1: Why did my mouth feel weird when I took a bite of that Thin Mint?
Person 2: Dude that's a mouth boner
Person 2: Dude that's a mouth boner
total mouth boner
An insanely delicious meal. Craving a particular food for a long time and finally getting it.
"I'm dying for a good Philly cheese steak. One if those is giving me a total mouth boner"
"Yo somebody's getting some liquid diarrhea tonight."
"Yo somebody's getting some liquid diarrhea tonight."
[boner]-mouth
One that enjoys a throbbing boner in his or her mouth.
"Wow, that girl at the gangbang audition was a real boner-mouth!"
Mouth boner
Wanting to eat something really badly
Ahh man those corndogs look so good I just got a mouth boner