Almost peed myself at work today.
I come to my office this morning, see the main dev guy clacking away on his keyboard. Turns out the guy's been working on Sunday and had his kids with him. Keep in mind that our office is loaded with various kinds of headphones and studio monitors, we do acoustic research and measure headphones. I come by the dev guy and see that his B&W 686 bookshelf speaker has a poked metal (!!!) tweeter. Turns out his boy has been a very avid speaker poker and poked almost all of our monitors, which didn't suffer any permanent damage due to soft cone tweeters and paper woofers.
So picture this - a grown ass man, trying to suck the metal tweeter back with his friggin mouth! In the end his french kissing didn't do much, because considerable force is needed to right back metal tweeters (imagine very thick metal foil). I did some repairs with a piece of scotch tape (stick and pull back), but some of the deeper creases didn't budge.