Teehee it’s in his butt.
Since the 1980’s there has been a legend circulating from one Nerd to the other that in the original Super Mario Bros. Mario can actually jump the flagpole at the end. Is it true? What would be there? Would it be the princess in the nude? A wormhole to the Kingdom from which Toad hails, where you can eat his brethren and trip balls to your hearts content? Coins?! A Million allowances worth of coins? So is it possible?