-on explanations in the bathroom

Here I am, with all my crap,
a stupid looser,
swept beside, off the map.

And you tell me I should behave...
I am no *****,
it's just, you know, I am a ****** slave.

It's alcohol, it's coke;
it's pride, it's shame, it's greed;
you name it,
all that stuff that you don't need.

I'm glad you're perfect, nice and clean,
it's good to see you, though you're mean.
Myself, I'm different, to me that's clear:
I only watch myself from the rear.