Drive through a busy village papping your horn and frantically waving at everyone & counting how many wave back
Always ask the taxi driver (on your way back from the pub, slightly tipsy ) if he's been busy tonight/what time is he on til
Make your wife/partner 3-5 tea's/coffee's in the day and never get asked if you would like one. Burn your hand on a hot pan and they say are you ok. . .
when you have mislaid something, and while searching for it, you keep going back to the place it should be.