Katy Perry -- Parading Around Riff Raff … the Ultimate Dark Horse

No one believed Riff Raff when he told us he was hooking up with Katy Perry -- but when they showed up at the VMAs together … in matching outfits … we started to reconsider.

And then we came to our senses and realized there's NO WAY this could possibly be more than a publicity stunt!!! Right?