I was traveling yesterday, and circumstances forced my to carry some but not all of my grooming materials with me. As I was laying my backpack on the conveyor belt, the lady asked me if there were any toiletries in there, and I answered, with some trepidation, that there was a razor in there. She asked if there was any shaving cream, and I said no; I would never be foolish enough to try to bring shaving cream onto a commercial airplane flight.
Of course, were I so inclined, I probably could have done a little damage with that razor - given someone a good scratch on the back of the arm, at least. I'm not sure what havoc I could wreak with a can of shaving cream, although I supposed if I sprayed it up someone's nose, it would be temporarily difficult for them to breathe. Not to mention good for a laugh.
At any rate, I am freshly groomed this morning, and the skies are safe, at least from Barbasol-wielding maniacs.