A man was sent to prison for the first time and was terrified about all the things he'd heard about what men do to men during the long, dark nights in lock up. A guard escorted him down the corridor to his cell and all the time he was hoping his cellmate would be as near to normal as could be possible. The guard stopped suddenly and said (with an evil smile on his face) "Here you are - you're in here" and chuckled to himself as he locked the door and walked off.
The cell was very dimly lit and it was hard to see who was in there with him, as a shadow was cast over the bottom bunk, where his cellmate was sitting, although he could see that he was a big fella. "The top bunk is yours" said a a gruff voice and so he climbed up and sat under his blanket, hoping the night would be quiet and pass without any trouble. The night slowly passed without a word being said, until a voice from below called out "do you like games? I like games". He thought for a moment and thought it best not to offend and so he said "Yes". The voice said "oh good - we're going to play mummies and daddies. Do you want to be mummy or daddy"?
Shit, he thought, as his mind was working in overdrive in search of a response that would a) not offend his new found mate and b) not involve him being buggered. After a few view moments he replied "daddy" - thinking he had dodged that bullet. "Oh, ok then" came the reply, followed by a long period of silence.
Thinking that was it, he started to drop off until the voice said "Daddy"? So he said "yes Mummy"? "Get down here and suck Mummy's dick!"