off like a bride's nightie

Etymology
A reference to the supposed eagerness of just-married couples to have sexual intercourse on the night of their wedding. Australian from 1960.

Adjective

 * 1)  Making a rapid departure; away.
 * Just before it was to be his shout, he was off like a bride′s nightie.
 * 1)  Moving quickly and resolutely.
 * 1)  Moving quickly and resolutely.
 * 1)  Moving quickly and resolutely.
 * 1)  Moving quickly and resolutely.

Usage notes

 * Used only as a predicate.