Sex Survey

[WillyL]

For a survey, a professor asked his class how often they have sex.

Professor: How many of you have sex at least once a day?

A few hands were raised.

Professor: How many of you have sex at least twice a wekk?

Another few hands went up.

Then the professor noticed a student at the back of the class, smiling shyly.

Professor: What about you? You look very happy.

Student: Once a year, sir!

Professor: Once a year! Then why are you so happy?

Student: TONIGHT'S THE NIGHT!