An imaginary double, humorously referred to in order to explain the uncharacteristic bad behaviour of a normally moral person. Usually used light-heartedly. The expression formed as an allusion to plots in films involving actual evil twins.
Jane’s such a good girl and I took it as read that she would come to the wedding dressed appropriately, but she’s turned up in full goth makeup. At first I thought it must have been her evil twin.
USA, 2004.
Worldwide, but mostly amongst the young and hip.
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