The brooding, ominous song from the BaseGod features the spooky refrain, "Call Me Katy Perry" over horror show keyboards. And while the verses don't have much to do with KP (focusing mostly on partying, hooking up and B's untouchable levels of swag), he does give a shout out to "all the girls that kiss girls." So that counts.
Katy was definitely psyched for the shout out, calling it a "lovely #rare lullaby."
It's not he first time B has paid tribute to a pop idol. Back in 2011 he gave a shout to one of his other inspirations on with "Justin Bieber".