[Oh dear. For a moment, he wonders if maybe he's pranked someone who has no sense of humor...but no, it looks like she just didn't realize the container was harmless.

Once she eases out of looking ready to attack someone, he slides out from behind a chair...nevermind that he really shouldn't have been able to hide behind that without being incredibly obvious.]

I'm sorry, I didn't mean to make you think you were being threatened. It's just water and glitter, perfectly harmless.