Blushing Traffic Lights

Q: Why does a traffic light turn red?
A: If you had to change in front of everyone, you'd turn red, too.

Harvard Vs. Virgins

Q: What do a virgin and Harvard University have in common?
A: They're both hard to get into.

The Dragon

An explorer turns a corner, and bumps into a real live dragon! Surprised, she shouts, "I thought you were a myth!"
His response, "Well my dear, you were myth-taken."