So there's this small zoo in Taunton, and they have a single gorilla, a female gorilla. She's usually placid, but she begins acting up, getting aggressive and even dangerous. The zookeepers quickly realise the problem- she's in heat. There's no male gorilla at the zoo, nor at any other zoo or research institution anywhere in Somerset. Something clearly needs to be down, so the directors of the zoo sit down for a roundtable.
"How are we going to solve this Jenny situation? She's our star attraction, but as it is, we'll have to remove her from exhibition. It'll ruin us."
"Well, I mean, she needs a good seeing to, that's the problem"
"But where are we we going to find a gorilla?"
Then, one of the directors, a look of shocked realisation spreads across his face.
"Hang on. You know Bill, the groundskeeper? He's a weird one... I bet if... if we made him the right offer... he might do it..."
The looks of disgust at the table turn to intrigue. It's decided that Bill will be approached with the proposition.
The directors, nervously wringing their hands, walk over to Bill.
"So, Bill, how's things with you?"
"Eh, same old, you know."
"Well, Bill, we have a rather sensitive and unusual question to ask you. Erm... how would you feel if we were... to suggest that you might be interested in... ahem... in fucking the gorilla for £200?"
Bill thinks for a moment, then nods his head.
"OK, I'm in. Three conditions, though:
I ain't gonna look her in the eyes.
I ain't gonna kiss her on the lips
And you have to give me a week to come up with the two hundred quid".