well, "aye" is scottish slang for "yes", or could be "hey" or "eh!" if u have an accent, "mon" is jamaican for "man", "then" is english for "then", i guess the anteater isn't so fluent in english, but he's trying to say "hey bitch (aye mon), u gotta prob wit me? lets go (then)"
Lol - wth am I doing here? Gramps is the best example of the least fluent in web slang. He still says 'dag-nab-it' But maybe the word 'mon' is a shortened form of C'mon - or 'come on'?