Jumbo goodness.My son-in-law taught me the proper way to cut and slice a mango: Cut it in half, avoiding the fuzzy pit. Then cross-cut the half on the inside, and turn the cheek inside out to expose the cubes. Cut them off at the base.
A step he neglected to mention is to stand over the kitchen sink to scrape out each skin half with your teeth! You won't want to leave anything behind. And fully expect that mango juice will be dripping down your chin and through your fingers. Yum.