Having accidentally gotten IcyHot on my testicular region a few times in my life, it doesn't take a genius to realize it'd hurt down there too. Mistress coated my butt plug in it as lube for a punishment once. It was painful for a brief period, but mainly gave me hours and hours of uncomfortable feelings down there. Needless to say I learned my lesson. Experience is a good teacher, but not necessarily a kind one. I did out a lot of stupid things in my ass as a kid. I started playing with my ass at age 12 and made home-made butt-plugs out of anything and everything. (dog toys always worked the best for some reason) Even with a condom over it, the hygiene issue was enough to make me be extremely careful. I finally got to experience a real butt plug on my 18th birthday. Never once have I ever desired to go back to random objects. Honestly, its just not a great idea to insert anything thats not specifically intended for said purpose. They just don't really compare. But if its fun for you, go for it. I took those same risks when i was younger. I was lucky, but I'm sure I had a few close calls to the emergency room to get a home-made plug out of my ass.. haha