A couple wakes up in the morning and decides they want to do early morning sex. The Wife leans over and says hey how about we do something different? Husband says what you got in mind? Wife says how about we do 69 for old time sake. Husband eagerly agrees and they go at it. After they're done husband looks over at the clock and goes oh crap I forgot I got a dentist appointment at 10 AM. So he runs into the bathroom brushes his teeth really really good and heads out the door. He arrives at the dentist office and meets with the dentist. The dentist leans in to do the examination and he says to the dude, you had 69 sex with your wife didn't you? The husband shocked, says hey how did you know that? And the dentist says to him your forehead smells like shìt.