1 definition by D. Thiemann / Wash, DC
To be overjoyed or enthusiastic about something (e.g. a hip song, television show, that fly girl on the school bus), but trying to stay cool and aloof rather than show how overjoyed and enthusiastic one is; predominate usage peaks in junior high, ceases altogether by age 15.
by D. Thiemann / Wash, DC March 15, 2003