Dave came home from work early one day and found his wife in bed with a total stranger.
"What on earth do you think your doing?" he screamed.
The wife turned to the other man. "See," she said. "I told you he was stupid."
Furious, Dave rushed to the cupboard, pulled out his gun, and pointed it to his head. "I'm going to kill myself!" he told her. His wife just started laughing.
"Don't laugh!" he screamed. "You're next!"