Joe sets up his friend Michael to go on a blind date with a friend of a friend of his. But Mike is a little worried about going out with someone he's never seen before. "What do I do if she's ugly?" says Mike, "I'll be stuck with her all night."  

"Don't worry," Joe says, "just go up to her door and meet her first. If you like what you see, then everything goes as planned. If you don't just shout 'Aaaaaauuuggghhh!' and fake an asthma attack. That'll give you an excuse to cancel the date right then and there."  

So that night, Mike knocks at the girl's door and when she comes out he is awe-struck at how beautiful and sexy she is. He's about to speak when the girl suddenly shouts:  

"Aaaaaauuuggghhh!"