Mario looks like Ron Jeremy and Luigi is basically him, but skinny.

Fun fact: there was not one, but TWO Super Mario Bros. porn parodies in the early 90s with Ron Jeremy as Mario. The parodies are called "Super Hornio Bros" and because they're legally classified as parody works the only way Nintendo could prevent the distribution of said pornos in order to maintain their family friendly image of the era was to actually buy the rights to them. Yep, Nintendo legally owns two Mario porn parodies starring Ron Jeremy.