Kick your foot up on a piece of furiture and kick the same piece of furniture with the injured foot while cussing "Stupid thing"
Put a pen behind your ear and start getting frustrated and angry when looking for it and start yelling saying "BUT I LEFT IT RIGHT THERE!" only to finally realise its behind your ear
Finishing your pint/cup of tea/etc and looking back at the same cup/glass 10 minutes later and questioning as to who drank it.
Going into a room for something, completey forgetting what you went in for, and walking around the room while you try to remember, only to remember when you leave the room and no longer need what you were looking for
