When you go into a room and stare at a random object...then leave. Then you go back in a couple minutes later knowing you need something but your not sure what. So you go back to what you were doing and remember 30 minutes later that you are thirsty.

When you know its going to rain but you take the bus to have dinner anyway. To get home you have to wait 20 minutes at the bus stop in the rain and you get splashed by a truck driving pass. Despite being wet and looking like a mess the night was worth it. (Also wearing a dress when you know its going to be cold/raining isnt brilliant either)