Ain't nothing like a visit from the

 Undertaker 

Behind my bathroom wall

 Or down stairs 

The sound is no longer

 Coming from above my head 

There is still

 Someone's above me 

The cabinet slammer

 Switch 

While the pain cream

 Is working 

If the weather

 Don't take me out 

I can do 3 things

 A day 

I have 50,000 things

 On my to do list 

I have to get

 A ruler 

Run it