A former colleague told me this one :

Whilst she was still with her husband, they found out that the god-botherers - JWs - were in the locality.

He stripped to the pelt and waited for the door to be knocked.

Opening it - stark, bollock naked, you understand - he asked the god-botherers 'Can I help you ?', and while they were struggling for breath, he says over his shoulder 'Shan't be long, my love -

don't go away, will you ?'.

It seems that JWs couldn't get off the doorstep quick enough ; and even if the tale is apocryphal, it still makes me smile.