As it reads right now, I'm not sure how to, "up my ass". He also should have added a period at least because I'm not sure how to, "up my ass leave". Aren't "up" and "leave" contradictory in this instance?
Unfortunately, nobody has taken this guy up on his offer. Shame. We could all find out how to, "up my ass leave."
(P.S. I probably shouldn't talke about grammer or punctuation, this thing is most certainly riddled with errors."