Traveler: I opt out.
TSA agent: OK, we'll have to give you a full pat down, including both thighs up to the groin.
Traveler: sigh if you must. But in the interests of full disclosure, you need to know that due to some unpleasant events in my past, which I neither want to discuss nor even think about, I'm told that the I beat the last guy who touched my crotch into a bloody pulp. Mind you, I have no recollection of actually doing this, and I think I can control it if I can brace myself for the unwanted contact. Still, I want you to know that I have the highest respect for you and admire the difficult job you do, so if I have a full psychotic break and injure you, it's nothing personal, and I have no conscious control over it.
(pause)
Traveler: Your move.
I hope they get this stuff straightened out by Christmas, because I'll be flying then, and my wife is not going to like heving to bail me out of jail.