clearly op doesn't think this behavior is right, as they've used it as an example of "the worst monster of all", but the confusing part is why and if anyone would ever even do this. it would have worked better if the person picked one way or another; at least it would have been a statement on op's part.

fyi the right way is to put it over, unless you have a cat, then you're allowed to put it under without penalty or shame.