Yes of course I finger wag. Whenever any of the Rockets get a block, I start wagging BOTH fingers at anybody 5m away from me.
I used to do the finger wag alot when I played basketball. Most people that I defended were taller than me (I am about 5-9 with shoes). I used to get most of my block shots on the perimeter when taller people would look at me and then automatically assume they could shoot over me. I surprised many people, some over 5-6 inches taller than me, with my vertical quickness. Blocking somebody so much taller than me used to make me real happy, so I would wag my finger just like Mutombo.
Of course its not appropriate.I don't wag my penis at rocket games or sports bars. That's why I have the confort and privacy of my home.
I once finger wagged some people in traffic who tried cutting in front of me and were stopped by cops. Needless to say that was a bad idea. Thankfully nothing came out of it but I now exclusively reserve finger wags for basketball games. Houston driving can be rough man.
I was at a Celtics vs Rockets game 2 years ago when they did were in their #1 Pick tank season. And Mutumbo was in the game playing backup minutes for Yao. We'll Mutumbo made 2 blocks and I saw a bunch of celtics and rockets fans behind the basket wave the finger with Mutumbo. So it is contagious Mutumbo's finger wag is.