KEYED UP \KEED upp\ adjective: The state of heightened anticipation commuters get as their stop approaches, which sees them remove their car keys from their pocket and position their fingers on the ignition key so they’re ready to drive as soon as they arrive at their automobile.
USAGE: This chick on the 6:33 was so keyed up that she had her keys at the ready two stops before she got off in Chappaqua.