Cheat: Special Cup
20 years later, we'd like to think most 30-something SNES owners have played through every cup in Mario Kart. It's also the honest way to unlock the very challenging Special Cup.
If you want to skip the proper play through and just unlock the Special Cup through a cheat, follow these steps. At the cup select screen, press the following buttons in order: L, R, L, R, L, L, R, and R.