n. usually a referance of insult towards a person who is very simple. A person who does things, or behaves in such a way that others would think them very immature or ridiculous. This term is used because it is assumed that a green moth is one of the most simple and unintelligent creatures.
1. taste left in your mouth after eating a tasty lunch of greek food.
2. Mouth state after kissing a sorority girl 3. Saying something really dumb
"man after this lunch I'm going to have greek mouth for the rest of the day."
"Ben totally made out with Suzy at a date dash, now he has greek mouth."
"That kids answer to the professors question was so dumb, he has a greek mouth"