off like a prom dress en · ADJ
Pronunciation
- (Australia) audio
Etymology
Pun on two senses of off, with the implication that a couple at a prom are likely to have sexual intercourse. Compare off like a bride's nightie.
Meanings
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(Canada, US, not-comparable, qualifier:simile, slang) Making a start, or departing, very rapidly.
When we heard the police car pull up, we were off like a prom dress.