A 30 sometimes 40 year old who still dresses like they are in their 20's. Also known as a yupster, yindie or alterna-yuppie.
ORIGIN: taken from an episode of Star Trek in which Captain Kirk and crew, land on a planet populated by children, with no adults in sight. The kids call Kirk and the crew “grups,” which is a contraction of “grown-ups.” It turns out that all the grown-ups had died from a virus that greatly slows the aging process and kills anybody who grows up.
To learn more about this new emerging subculture click here. You just might be a GRUP!
Here a grup, there a grup, every where a grup grup!