It's been confirmed as Day One DLC available for $10.99 or Free with a Season Pass.
But seriously, I'm running out of Pdox products to hunt down. I'd actually pay for this hilarity as a spoof DLC. It's optional anyhow... and It'd be a hilarious way to get some promotion for the game. Just look at Goat Simulator if you don't think people will pay for stupid stuff developers make for the sheer point of hilarity. Not like people don't mod games to put in random things anyhow.