Head, who said head?
This hits the nail on the head, but remember giving head isn't sex...legally.

"George, did YOU chop down the cherry tree?"

"No, Dad."

"I think you are lying."

"No, no, no! I swear I did NOT chop down the cherry tree."

"Son, I saw you out here with your axe. Your punishment will be much worse for you if you lie. Now, tell me the truth!"

"Dad, I answered your question truthfully. Still, I must take complete responsibility for all my actions. While my answer was legally accurate, I did not volunteer information. Indeed, Dad, I did cause the cherry tree to be lying on the ground. To do this was wrong. It constituted a critical lapse in judgment and a personal failure on my part for which I am solely and completely responsible. I know my answer to you gave a false impression. I misled you, my own father. I deeply regret that. I can only tell you I was motivated by many factors.

First, by a desire to protect myself from the embarrassment of my own conduct. I was also very concerned about protecting Mom from this shock.

What I did, Dad, was use a saw to cause the cherry tree to fall. Only after the tree was already down did I go get my axe to chop off individual branches. So, I chopped off branches, but sawed down the tree. Look at the saw cut on the stump and the axe cuts on the branches.