Yes, I once actually performed the foul deed within the confines of a TR7; this event may have taken place, if my memory does me no disservice, in the car park of Finchley Golf Club.
A regrettable, cramped and uncomfortable, of ultimately satisfying, experience.
The car in question was one of the few automatics built, by the way. A three-speed unit, this was not a gearbox of which the British motor industry should be proud.