Bizarre habits

While living with some friends about ten years ago I woke up one morning with the following in our flat after a night out:
1 traffic cone
1 set of lights from a small fairground ride
1 beer barrell
and a road sign for St Keverne Road. ( I can only assume its because my flatmate was called kevin and he took a fancy to it)

What is it with young men and stealing street furniture?

When i was about 18 we had almost every type of amber flashing warning light, we even once stopped on the motorway at 3 in the morning, just so we could get a new model.