Lauging in Some Poor Guy's Face
Movies make it look like laughing in a person's face is a premeditated, maniacal behavior. They always have the overconfident villain do it right before the tide of battle turns and a seemingly impossible underdog victory takes place. The truth is that laughing in someone's face is an embarrassing error. It happens when you're talking to a person who's acting like an idiot, but you haven't adequately prepared for some towering idiocy that they're going to drop on you. Laughing in their face surprises you more than it surprises them, and you try to cover it up with a cough right when it happens. I think the last time I burst into laughter while having a heartfelt conversation with a friend was when he told me that he would never meet a woman as wonderful as his current girlfriend. She was standing right next to him and I'd had a few drinks. Things were never the same after that.