The practice of passing cars to exchange underwear via adjacent windows.
The Ka passed the Punto in the night and the briefest flash of colour was seen as the panties passed hands, driver to driver, as their partners sat in the passenger seat waiting for their new attire that tonights shortbreading would bring.
by -=D=- December 17, 2007
Top Definition
The exchange of women's underwear via the open windows of two adjacent cars, driven by like-minded couples.
"I took the wife shortbreading last night, got ourselves a lovely G-string for our troubles"
by Peter the Shortbreader December 02, 2007

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