"Mm," he said, nodding as he noticed the staring. Perhaps she wasn't buying the fishman costume, then. Or perhaps she wasn't as inebriated as the previous chap.
"I enjoy your costume," he said, deciding to test her opinion. "Are you a spirit of some kind?"
He said this while bouncing his hands at the full length of the regale. It was impressive. Some red wine sloshed out and he narrowly kept it from spilling on her dress.
"Oh! So sorry. That was close!" he said, voice high and nervous.