The shopkeeper says ..
“Nothing in my shop is handled by human hand”.
He then noticed a piece of string hanging out of the shopkeepers trousers and asks
“What is that piece of string for”?
The shopkeeper says ..
“When I need a piss I just pull on the string and it pops out”..
“That’s OK” says the man
“But how do you put it back”?
“That’s no problem”, says the shopkeeper “I just use the TONGS”.