1)someone who literally has crap in their mouth
2)Someone who says unneeded or useless words
3) Someone wiht colorful language all the time
4)Someone who lies constantly
Man, that guys eating shit, hes a crapmouth.
Why you say like after everyword, crapmouth?
"'All she does is say "You shit fucker, eat shit fuckface, you bitchass jerkoff!"' 'Damn, what a crapmouth!'
You said you'd pay me back the next day two months ago, an you still haven't paid. You such a crapmouth you little fucker!!!