I chaperoned my kids to a My Chemical Romance gig many years ago. I stood at the back out of the way but close enough to keep an eye on them. At one point I glanced to my right, and found that I was one of a whole line of chaperone dads standing at the back... The funniest bit was that we were all doing exactly the same thing -- stood with arms folded, glaring at the stage with a facial expression that said, "Go on then, you whippersnappers. The kids reckon you're great, so impress ME. I saw Nirvana, y'know. Give it your best."
Having said that, MCR were actually ok. Apart from the gaps between songs, which were unprofessionally long, and the lack of crowd rapport. Predictably though, the kids thought it was the brilliantest thing in the world and sang themselves hoarse, and I was temporarily The Coolest Dad at their school