Peter jumps a good several inches when the flashbang goes off and he's not going to be the only one. It was loud enough to startle people a ways off and while no one's going to be hurt soon enough Peter's going to have to start apologizing in a voice far louder than it needs to be as he tries to talk over his own ringing ears.

He handles calming down The Masses while Rocket busies himself with digging through the remains of the bomb Peter's made.

"It gave me a spook, are you kidding me?!" Peter looks over his shoulder toward Rocket, his mask once more stuffed into his back pocket to hide it from general view as yet another Adult comes over to lecture him on his horsing around in the Plaza.

Oh no oh jeez.

"I'm sorry, I didn't mean to scare anyone I'll clean this up right away--"