dogging
n.— «Leander Kahney writes: “Giving new meaning to the term ‘flash mob’ the British have invented a new sex craze called ‘dogging’‚ that mixes sex, exhibitionism, mobs and the Internet.” While Kahney believes that the term “dogging” probably refers to the “walking the dog” excuse proffered to spouses for an evening’s absence, it could also be the act of spying on a couple making love.» —“Cellphones and Englishmen” by Tony Deyal Daily Nation (Barbados) Sept. 18, 2004. (source: Double-Tongued Dictionary)