A man walks into a pub with a crock on a lead .
the barman squeals get that out of here it will get my customers .
Its harmless
get it out
look I will show you
he opens its mouth pulls his zip down and pops his willy into its mouth everyone is aghast
he thumps it on the head , then again and again and one last huge thump . Nothing . He pops it back in his trousers shuts the crock's mouth .
Turns to the barman and said told you its safe
Wow he said never seen anything like it .
The man then turns to the people in the pub would anyone like a go .
A woman at the back said yes me I would like a go but dont hit me on the head so hard .

( By the way my mother told me that one when in her late 70s )