Nets-Raptors referee Courtney Kirkland does the weirdest thing I've ever seen a referee do. Just watch:
THE GREATEST GIF EVER!
Apparently there were subs trying to come into the game, which is why Kirkland (forevermore known as #SkyKirkland) tried to stuff Hump. Sure, that makes sense. It's not like there's anything hanging around your neck that you can use to get the attention of basketball players.
h/t Will R. for the video