@spikepipsqueak,
Amused you will be. Man goes to a fancy dress party wearing only a glass jar on his penis. A woman asks, 'What are you?' He says, 'I'm a Fireman' ???
'But you're only wearing a glass jar?', says the woman.
'Exactly! In an emergency, break glass, pull knob and I'll come as fast as I can!'
(Sorry, more than one sentence
)