It does take practice, but it's just his way of hitting. He usually adds vibrations to every hit. Tensing his entire upper body for a split second. This should help you do it as well ;)
+Zisman101 He has many layers of pops as he demonstrated when he came to this workshop. I go to Breakin Kcl too. You can do different type of shoulder pops.. Normally rather than popping its strobbing like 20 times quickly :D you see when you learn to strob something so good, it creates a vibration :3 that is probably it or knowing him it could be ticking as he can do that with his shoulders too :3
