What am I capable of?

Observing the charming sunset pass
Aching, unable to scratch my arse

Preparing for one more isolated night
I wriggle and get a fright

My strapped arms had tickled my side
And through the air, I glide

Howling in my abandoned room
At the gleaming full moon

Exchanging greetings with my spongy wall
Whacking my head, I hear someone call

Oh my, it's time for pills
I run through my human kills

I see the one that felt real
The time I sliced him with steel

The beautiful, dazzling knife
Took the heart that gave him life

I kissed it softly
For that heart belonged to me

I pressed it against my chest meat
My own heart restarting its beat

Only for a second however
Then I knew, he was taken forever