Mario not really a plumber?

While the Super Mario Bros. manual claims that Mario was a plumber before getting sucked into the mushroom kingdom, some aren’t buying: The blog without a name writes: “I want to believe Mario. I want him to pop on back from the Mushroom Kingdom, walk into a non-pixelated bathroom, whip out some washers and a gasket wrench, and fix a leaky faucet. The evidence just isn’t there to support it.”