Ah. Even on a bat, he knows that face. That's a 'you had better start explaining yourself in order to try and save face' sort of face. Strange looks up at Peridot, thankfully manages to school his expression away from any potential laughing (she looks so tiny) and instead fixes Peridot with a decidedly neutral frown.

"Honestly, I was planning just to linger around, turn into human form behind you, say 'boo' or something like that, give you a bit of a fright, then we'd all laugh about this later while you inevitably tried to think of a way to scare me back. I didn't know fountains would be involved."