No, Can't Juggle but my son learned to juggle instead of learning to ride the Unicycle. He still became a great pilot but I can't see a way to combine the two.
BTW, I CAN Ride, Fly and Chew gum at the same time. I use to have a "sponsor" that provided me with a gumball each time I flew a demo at a local air show. That was in response th the announcer that bet that I couldn't walk and chew gum at the same time.