1. If you must leave applying self-tanning spray until the very last minute (so you don't look like a white whale on holiday) do NOT then put on your knee-length boots and walk to the shops. When you get return home and remove said boots you will have developed lovely tanned legs. It's just a shame that the parts of your calves the top of the boots gripped look like they've been striped with white paint.
Not that this happened to me.
Oh no. I wouldn't do something that silly.
*retires to the bathroom with a loofah for an emergency exfoliation session*