Three college professors were playing golf in a particularly hot day when they decided to make a bet. Whoever loses a round will remove an article of clothing. By the time they got to the 9th hole they were all completely naked. Just as they were about to wear clothes, a bus carrying a group of college students came around the bend. Two of the three professors grabbed their clothes and try to cover their naked body. The third one, however, just put his clothes over his face.

After the bus passed the two professors asked the third one, “Why in the world would you cover your face? Have you no shame?”

The professors replies, “I don’t know about your classroom but in my classroom EVERYONE knows my face!”