Sorry you're not getting many serious answers, just bumping the thread.
The best grilling I ever got at the airport was by Israeli security. They asked me a bunch of questions and looked for inconsistencies, and I had told them that this guy across the room was my dad. So they ask me to call to him, and I do, but my dad is completely oblivious and just keeps walking around whistling. So this looks really bad because I can't call him over by saying "Dad!" and the Israeli security guy gets tenser and tenser. Eventually I walk over and grab my dad, bring him back to the security guy, the security guy asks questions and visibly relaxes once he starts getting the same answers. This was in SFO.
The second best grilling I ever got was also in SFO. I was going through one of those full body scan machines and the lady asks me to take everything out of my pockets. I said I did. She asked me again. I said there wasn't anything in my pockets. Then she pointed at my leg and said, "There's something in your pockets, right there." She gets tenser and tenser and she calls someone else to help her out, and I'm getting confused because I'm patting my pockets to show her there's nothing there but she sees something and doesn't believe me. Eventually I look at where she's pointing, just above my knee, and realize what she sees -- it's my quadricep muscle! I was a pretty fit cyclist at the time and had pretty big quads, and they kind of stuck out a bit. So I figured it out and started joking around, which made her even MORE tense -- but then suddenly she realized what I was joking around about and was finally like, "Naww, you're skinny as hell, you've got to eat some beef and potatoes. Beef and potatoes!" Then she gave my legs another look and let me through.
-DS