This thread was prompted by the 'Things found under the sofa' thread.
From my youth:- Having taken my girlfriend out in the family car and had a fun night.. replaced it in the garage, checked all round to make sure there were no dents.. the following evening when I returned from work.. my father asked me if I had a good night last night... I said "yes great thanks"... He said "What did you do"? and I nonchalantly replied... "Oh We went for a coffee"..... He asked "Are these the cups" as he produced a very recognisable brassiere..........which he had found in the back seat of the car!!!!!!