Many years ago I was inveigled into attending an "education and training" exhibition at Waterloo Station. It was to last all afternoon and reach a triumphant climax during rush hour - which it did, although in an unplanned way. On one of the exhibition stands the incentive was a free glass of wine. Unfortunately, during a mid afternoon lull, the , um, lady and gentleman on the stand started to hit the bottle.
Freed of their inhibitions they then retreated behind their stand (pointlessly since it was in the middle of the station concourse
) to pass the time with some vigorous rumpy pumpy. Needless to say this was caught on CCTV
They were so energetic in their activities that the exhibition stand collapsed