Well the obvious thing to do would have been to NOT save them to your computer in the first place, for it is just a little creepy. But as you say, it's done now and I don't have any way of forcing the issue either way.

At the very least I have learnt a valuable lesson, so hey ho.

Lesson = excited little pre-pubescent boys will save your photograph for whichever dodgy practices he likes to involve himself in?

Sadly so.