At Heathrow they made me put my miniature travel-sized toothpaste tube in a clear plastic bag. Due to the security situation, you know? Liquid bomb plot and all that?
And a good thing that was, too. Because as it happens, I had concealed just enough plastic explosive in there so that, in combination with an empty brandy miniature to make a shaped charge with, it would have been just about enough to fracture one of the windows and cause explosive de-pressurisation.
But that damn plastic bag. I sat there all flight, just staring at my toothpaste - so near, and yet so unreachable!