Damn. Oh well, you guys still like it, at least. I've got to admit, it's a pretty good fake. Had me jumping at the dupe check to see if it was already here.
The first one I could almost buy but not the rest. He only bothers to alter size and perspective on the first. The rest are just the same sized dot copy and pasted which is really obvious in the last one.
Third one could have been a happy accident. Fourth would have been way too much work for a disgruntled worker and too bland for a dedicated prankster.