Not exactly the same, but I remember being with a colleague at LHR post 9/11 and we were going through the usual staff security checks on our way to board a flight. Apparently our staplers were very threatening items. We thought it was a joke. Apparently not. Super called. We explained we needed then to staple coupons, whole terminal would grind to halt overwhelmed by bits of loose paper floating about, where on earth can we leave them that's convenient when dashing about from landside to airside? He was very reasonable, and we got through no problem. But it could have been awkward because of an over zealous twit. From that shift on, I thought it more prudent to keep my trap shut infront of them and just get on with it.