A rather long winded joke, read all of it to get the punchline...

Right, so there was this guy that lost his eye in a car accident, and after losing it he hadn't been out of his house much, aside from having to go shopping, because he was so embarrassed. One day his friends come over to his house, and they say "look man, you've got to come to the dance next week, it'll be fun, and you haven't done anything in ages." The man stubbornly refuses, until his friends stop pestering him about it, but the next day, they come back, and say "well, we've got a bit if a surprise for you... We've put together enough money to buy you a fake eye." The man says "that's great! thanks so much!" His friends then say, "but, you have to promise to come to the dance once you've got one. The man thinks it over, he's still a bit embarrassed, but eventually agree. So the man and his friends drive to the eye store and walk up to the man at the counter. "Hello," says one of the eyeless mans friends, "we're here to buy a fake eye for our friend here, do you have any in stock?" The nan at the counter says "we certainly do, and walks into the back of the shop, returning later with a box of beautiful glass eyes. "These a very good quality eyes," the man said "they're hand painted, and we have a match for pretty much any eye colour. "Great!" Says one of the mans friends, "how much do they cost?" "Well" says the man at the counter, "these are very good quality, so you're looking at around $1500 to $2000" "well" says the mans friend, "we don't really have that much to spend... Do you have any others?" "Certainly," says the man at the counter who puts the lid back on the glass eyes, walks into the back of the shop, coming back with a box full of plastic eyes. "These ones are also hand painted, but they aren't as well-painted as the glass eyes, and they aren't quite as matching, but they are still rather indistinguishable from normal eyes. "Right," say the mans friends, "how much do they cost?" "Um... These," says the salesman "will cost around $900" "sorry," says the man to his friend, "but we don't have quite enough for those, either. Do you have any more?" He says, turning back to the man at the counter. "We do have some wood eyes, says the man at the counter," he then produces a box from under the counter. "These wood eyes aren't hand painted, and won't be able to get a really good colour match, but we can find a passable colour, I'm sure." Says the man at the counter, " and they'll only cost about $120" "right" says the eyeless mans friend, "we'll take this one then." He takes a dark green eye from the box, and gives it to his friend, handing the man at the counter the money. The friends drive home, trying to cheer the eyeless man up, as they eye isn't entirely convincing. "It's okay," says the eyeless mans friend it'll be fine, it won't even be that light at the dance, and your eye won't show." So the man reluctantly goes to the dance the next week. Once arriving at the dance, the man sits alone in a corner until everyone else has a dance partner. The mans three friends come over to him, and encourage him to get a partner, "how about her over there?" The mans friend points to a woman sitting alone in a corner on the other side of the room. "Come on," prompts his friend "you can't have come all this way for nothing." "Alright," says the man, "I'll ask her to dance. As he walks over he realises the lady has a bit of a hunch back, and starts having second thoughts. "I'm no better" says the man to himself, and someone's up his courage and asks her to dance. "Would you like to have an dance" asks the man. "Would I!? Would I!?" Asks the woman. "Hunch back! Hunch back! Yells the man and runs back to the corner.