"I am the elusive Mayfly known as love -OW!"  A derringer bounced off Vash's head.

"That's a dumb comparison," Knives grumbled.  "Mayflies don't eat.  They only live for a few day and die after...uh... " Ugh, better not mention the mating part.

"Anyway, at the rate you gorge yourself, you're still a nymph."

"I'm not a girl!"  Vash protested.

"Idiot, a 'nymph' is the juvenile stage of a mayfly. They live for years and are omnivorous- they'll l eat anything."

"Extended immaturity, eats everything in sight," Meryl sighed.  "That's Vash, all right."

Millie frowned.  "So...does that make Meryl a nymphomaniac?'