How to block other people's pictures for your self

Then just ask them not to show you those pictures. If they are in amongst holiday pics and you are sitting having coffee or something, just hand the packet back to him or her and ask that they remove the one's that you don't want to see.

What are they? Ugly baby? Fat aunt?

Thanks,
I know I can do that. Just wanted to know if it is possible without asking people about that. Some might be friends of friends with some photos I or my kids don't want to see.