Two blokes are in hospital,laid in beds waiting to go into theatre.
One says to the other "What you in for"?
The other replies "Endoscopy"
"What's that then"? the first bloke asks."...
They'll send a camera down my throat into my stomach and look for things like ulcers etc, what you in for"? replies the second bloke.
"Camera up my ass" he says.
Do you mean a Colonoscopy"?
"Nah", says the first bloke, "The missus caught me taking pictures of the next door neighbour sunbathing nude in her back garden"