Ever read "Rockin' Steady, A guide to basketball & Cool” by Walt “Clyde” Frazier????
He has an entire section on catching a fly with your hands. From and ESPN2 interview:
ESPN.com - Page2 - Walt Frazier
10. Quickness was a big part of your game on the court, but when I was reading your 1974 book "Rockin' Steady," I came across a section in which you talk about catching flies out of the air.
Frazier: What happened was, I used to do camps all the time, right, so one particular day we were outside the mess hall waiting to go in and, you know, I'm like the Pied Piper, wherever I go there are always 10 or 12 kids gathering around me. So I'm sitting there, and I swat at some flies, and I knew I had one, but it turned out I caught two! I had two in my hands, and I shook them up so they'd get dizzy, and then I threw them down onto the ground. And everybody was like, "Hey man, Clyde can catch flies!" So that perpetuated the myth right there, man.
Can you still do it? Are you still that quick?
Frazier: Well, now I tell people that the flies know about me, so they don't come around. But you know, in that book, I demonstrated how to catch them. Because, you see, flies fly horizontally. If you reach straight up, you're not going to catch them. You have to swing horizontally, and then they'll just fly into your hands.