Midnight Shift

I like to work on a midnight shift
When all patients are asleep
At day I deal with their hysteric stuff
At night, medicine, I give them round the clock

Doctors will visit them at day
At night I could sleep right away
If medicines are all been given
I worry not to sleep until seven

I send to lab some poop
The day the Dr told me to hop
I catch some stale urine
At night, I feel absolutely clean

You know why the reason of what I say
Sometimes I sleep all day
When midnight shift is all I'm in
I'm happy and always been