Y-fronts

Setting a spatted foot on the bench that ran down the middle of the changing-room with elegant distain, Adrian began to flip through a pile of Y-fronts and rugger shorts with his cane.

I did the latter, so in writing this I have put it on record that I am one of the few men who has spent Christmas Eve running across a Kentish marsh in his Y-fronts with two horses trotting after him in close company.