And the passengers LOVED it. How could you not?!

Alya Jakubowicz was flying with her family - including her 2 year old son Guy - from Kansas City, MO to Chicago, IL on July 20th. Ironically, little Guy learned how to fist-bump when he was about 18-months-old AT AN AIRPORT, his mom told ABC News. 

So, on said flight to Chicago, he did what he always does - greeted aisle passengers with a fist bump. And everybody loved it. Those that didn't have a heart of stone, that's for sure. He's adorable! Apparently he does it on every flight!