Heard this joke last night...

...a man walks into a pub for a drink. On the counter there's this massive big jar crammed full of £10 notes.
He asks the barman what they are collecting for, thinking its for charity.
The barman answers "It's the £10 challenge, whoever wins gets the jar and all the contents"
Its obvious there must be a couple of grand in this jar so the man says"OK, I'm up for it, whats the challenge?".
"Oh no" says the barman, "You need to put your tenner in before I tell you the challenge and you cant take the money back if you want to back out from it".
The man says "I'll just have a pint".

After a several pints, OK a bucket-load sitting looking at this jar stuffed with tenners, obviously a good couple of grand in it, the man goes up to the bar, slaps a tenner down and says "OK, I'm in - whats the £10 Challenge".

The barman says"OK, Challenge no. 1 - you drink a pint of my special chilli/woucester sauce/olive oil mixture, in a wanner, no boaking or dry or otherwise and no even complaining about breaking into a sweat.
Challenge no. 2 - out in the back, theres a pit-bull dog with severe toothache, had it for a fortnight after he bit the postie. He's got a wooden leg so it didn't do the dog much good and he's in agony. You have to pull out the broken tooth with your bare fingers.
Challenge no. 3 - upstairs from the pub, lives an 80 year old granny, nae teeth, nae bladder control and a colostomy bag. She's also never had an orgasm so you have to give her one - and we have to be able to hear it down here in the bar".

"Right" says the man, "Bring it on". So, he downs a pint of the special chilli mixture, fighting hard to keep the dry boak down, doesn't even mention the sweat he breaks out in - feeling like a river running down the sheuch of his arse. "OK, now for no. 2".
So he goes out to the back of the pub, the regulars hear all sorts of growls, snarls yelps, screams and cries, finally dwindling to a whimper.

The man staggers back into the bar, covered in bite marks, scatches and dripping with blood, clothes ripped to buggery.

"OK" he gasps, "Where's the old granny wi' the toothache...?".