Gather 'Round Children, It's Story Time:
A child molester and a child are walking together into the woods.
It's getting darker and darker as they walk deeper and deeper into the woods and they start hearing strange noises from all around them. With his little voice tinged with fear, the boy looks up and says, “Gee mister I sure am getting scared”.
The child molester looks down at the little boy and replies “You're scared? I have to walk out of here alone.”
-The film Blue Valentine includes this joke to good effect