BenGay®, Icy Hot® and other forms of pain relieving lotions can be applied to items that will come into contact with delicate human skin to produce the opposite of pain relief: pain giving. We have all heard of high school kids putting Icy Hot on the jockstraps of unsuspecting classmates in the locker room.
I never really found this gag to be funny because I could sympathize with the poor bastard who thought his family jewels had just been set ablaze. However, once when I spent the night at a good friend’s house, I did put a thin layer of BenGay on his stick of deodorant. After taking a shower, he came out of the bathroom waving his elbows up and down and proclaiming, “Phwewwww! Man, my armpits are burning!”
As I rolled on the ground with laughter, I had to let him know the source of his pain. We still laugh about that joke from time to time. I know, this gag is cruel like the jockstrap joke, but it somehow just felt right at the time.