When you eat or drink something and it tastes so good, it leaves a pleasant taste in your mouth called a mouth buzz.
1. Man, I wish I had some more of that Cabernet; it gave me the best mouth buzz.
2. I don't want to eat any eggs, I already have a great bacon mouth buzz going on.
This is a more severe case of dry mouth. It feels like a pigeon has flown into your mouth and deposited a few feathers, giving you that extreme dry and coarse feeling.
Causes: Smoking too much weed
That blunt I just penged gave me pigeon mouth!
Effectively what should be 'french kissing', only one partner declines to use any tongue. Leaving the other to find theirs inside an empty void.
The girl was damn hot but when we kissed she totally gave me 'cave mouth'.
A napkin
I'll grab the straws and some hot sauce. These tacos are gonna be messy, so can you grab a bunch of mouth paper?
Means the same as potty mouth, toliet tongue, sewer mouth, etc. That is to say, some assclown who cusses at inappropriate times.
Rhino clit? That's disgusting! That's horrible! You kiss your mother with that mouth, you...you eat with that mouth? Garbage mouth!!!
From The Jon Stewart Show, a description of particularly stupid people.
Not to be confused with "Potatoes with mouths."
Even better than "Potatoes with mouths" because potatoes can act as a conductor of electricity -- rocks just sit there.
Those people are so stupid, they are like rocks with mouths.