You're no dummy! I had the same issue the first time I bought mangoes (my roommate at the time had to show me how to cut them). Although I did google right now for more exact directions, lol. There are a few different ways to cut them, my method of choice is to slice & scoop.
- Stand the mango on your cutting board stem end down and hold. Place your knife about 1/4" from the widest center line and cut down through the mango. Flip the mango around and repeat this cut on the other side. The resulting ovals of mango flesh are known as the "cheeks". What's left in the middle is mostly the mango seed.
- Cut parallel slices into the mango flesh, being careful not to cut through the skin.
- Scoop the mango slices out of the mango skin using a large spoon.
Source:
www.mango.org (who knew mangoes had an official site?!?)