Barstool Sports founder Dave Portnoy has turned his pizza obsession into a money-making machine ... revealing his "One Bite" frozen pies are flying off the shelves -- with nearly a quarter million sold in just weeks!!
Of course, Portnoy became an extreme pizza savant about 5 years ago ... after a debate with a coworker over what food they could eat every day for the rest of their lives.
To prove his side of the argument, Portnoy started consuming pizza daily ... which led to making popular videos ranking 'za joints all over the country.