Guy in a bar sees a jar of tenners behind barman, so he asks;
"What's with the Jar of tenners"
"Ahh you have to pay a tenner, then you get 3 tasks to complete if you do them all you can have the jar"
"What are the tasks"
"Nope doesn't work like that, I need the tenner first".
Not fully convinced the man drinks a pint before deciding he has to know what the tasks are. So he pays his tenner and the barman explains;
"First you have to drink a pint of whiskey without pulling a face, second there is a pitbull in the back room with a wobbly tooth, you have to get that out with your bare hands, lastly there is a 90 year old woman upstairs that's never had sex, you have to bed her".
"That's crazy I can't do all that".
Anyway the night goes on and 10 pints later the guy who can hardly stand decides to give it a bash.
He nails the pint of whiskey and despite the desperate urge doesn't even blink.
He then goes into the back room where all sorts of growls and barks and cries can be heard. The man comes out, clothes torn, blood all over him and says;
"Right, where is this old woman with the wobbly tooth"