I Charge $1000 For An Aspirin

I gave my patient an aspirin and charged him a thousand dollars.
When he got my bill, he came to my office and started to holler.
He was so pissed that he shoved that bill up my butt.
I cussed him out but I should've kept my mouth shut.
My used my head for a punching bag for ten minutes.
When it came to trouble, I sure was in it.
I decided that I would never again give an aspirin to patients who are large.
When they're bigger than me, they kick my ass because of what I charge. 

(This is a fictional poem)