Here's the Right Way to Cut an Avocado to Avoid "Avocado Hand" Injuries
Apparently people are accidentally cutting themselves while prepping avocados — the internet is calling it "avocado hand." Do yourself a favor and STOP cutting avocados in the palm of your hand. Instead, turn to a trusted source, like the California Avocado Commission, to teach you the proper and safe way of cutting an avocado. Just be sure you are starting out with a ripe avocado. There's really no safe way to cut a hard, underripe avocado.
Read on and refer to these GIFs of cutting an avocado if you need more direction.