There are many scenarios within which I would walk away. Just after farting in a lift is an everyday prime example.
A ****ing belter. The one I like is when you turn on your heel and **** off after you've just jizzed all over her face and she's clutching for the tissues...
Or the cloud of dust that kicks up when you drop your 15 year old bird off at Calais to get the ferry home and you head Egypt-wards <getouttathere>