Originally Posted by T.J. Bender

Out of curiosity, why would you surrender your boarding pass? The TSA then has the opportunity to identify you by name and add you to Pistole's naughty list.

I'd suggest refusing to turn over your boarding pass, and instead ripping it in half on the spot as evidence of your intent to leave, then keeping it in your possession. Besides, surrendering your boarding pass doesn't mean much in these days where you can either print a new one at the ticketing counter or have a mobile BP sent to your phone.