STAFF: Why is it when some people tell a joke they NEVER have a preview picture, and then others do, when they don't want them?

I noticed for one particular person, it never shows a preview picture when they tell a joke. It really ruins the whole idea of telling a joke, when the picture is previewed before you even open up the post. Please fix this!! If you do it for one you should do it for all or not at all. 😡