when you accidentally bite your gum and it swells and since its swollen there's a higher chance of biting it and then you do bite it and then the mouth butt is even bigger and so on
by loklokloklok.lokdirk February 16, 2020
by jermey September 18, 2003
A or type mouth that smells of what is known as, ass. Butt Mouth can most certainly be a way of describing an animal, such as a dachshund, who by any means, licks its own ass hole, therefore giving off a disturbingly disgusting smelly breath which is best described as, butt.
by Dr. Buttikiss Maximus January 28, 2012
When you fuck your wife in the ass and than immediately pull out, stick your cock in her mouth, than back in the butt, than back in the mouth!
by Madmonk210 September 17, 2023