What a *****. 
I grew up with acid days. Mom would pour in muriatic acid in each toilet and we'd leave the house for a day and do fun things. Go skating, hit the mall, etc. Toilets were SQUEAKY CLEAN.
Of course, if a DUmmy heard this they'd screech like a cat turned inside out. 
I worked with a guy that was an ex-Army Ranger, nice fellow, but I think he might have fallen on his head a time or 12 repelling upside down from a chopper.
Anyway, I came to the shop to do maintenance work on the trucks as he was cleaning them, and I noticed the floor in one of them was smoking!
He was using toilet bowl cleaner, which was 20% muriatic acid, straight from the bottle onto the aluminum floors of the box trucks.
Stunk to high heaven, but them floors were SHINY!
