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)

How is that a bizarre habit, that's standard student behaviour (although the street sign may bear a different name)?!