Misty May

Oooh, squishy!

Tongue-in-cheek unit of measurement for Gainaxing in anime: One Misty May is equal to a full bounce.

Named for Misty May, a Miss Fanservice character created by the protagonists of the 1991 Studio Gainax OVA Otaku no Video for their Show Within a Show (pictured at right).

See also ADV's "jiggle meter" feature in their DVD release of Plastic Little.

Definitely not related to the USA beach volleyball player of the same name, or to two (unrelated) characters from Pokémon.

Also probably not related to the evil alter-ego of a character in the Jiburiru hentai...