Two men are drinking in a bar, when one turns to the other and says, “I bet you $100 that I can bite my eye.”
The second man thinks to himself, That’s impossible, I guess he’s had a skin full, so he replies, “Ok, that’s a bet”, and he lays $100 on the table.
The first man takes out his glass eye and bites it.
So the second man loses his bet and has to pay up, so he passes the $100 across the table .
A while later the first man says, “I bet you $100 I can bite my other eye.”
The second man thinks to himself, well he can’t have TWO glass eyes; he obviously can see.
So he says, “All right, you’re on.”
The first man promptly takes out his false teeth and bites his other eye.