I got dirty looks from TSA last time I was at the airport. Tiny little airport with like 7 of those zigzags to get to the security person checking IDs. There was NO ONE in line. Just in front of me was a couple in their 70's or older, the lady walking the slowest. I said, "here, let me" and proceeded to remove the ropes, let them pass, and then put them right back the way they were. I made their walk 20 feet instead of 60. Fuck you TSA.
edit: cure old lady even said, "I don't think you're supposed to do that." I said, "Oh well" and smiled.