Does anyone know how butt munch is pronounced in japanese?

Question

Its for a script i am writing, there is a japanese character and they are the only japanese words he says to somebody.

Answer 1

if you mean just the pronounciation of the english word try:

butto manchu

Answer 2

Sounds like a typical American writer for a asian part.

Answer 3

These would probably come closest (there is no actual translation for "buttmunch," but these words mean "annoying" or "rude"):

煩い (urusai)

億劫 (akukou)

しんねり (shinneri)