When you make the enemy waste their ult on a Wukong clone.
Stop monkeying around will ya http://www.netanimations.net/Laughing-chimp-gif-animation.gif
Stop monkeying around will ya http://www.netanimations.net/Laughing-chimp-gif-animation.gif
Too bad Harambe didn't have a clone.
When you get the entire enemy team to ult your clone:
A whole team collapsed on my clone. They burned a Malzahar and a Braum ult on it. So delicious
Ah the infinite troll of the Wuclone
For never was there a tale of more woe than this of Caitlyn and Wukong's clone. 
I kept doing this to a darius in ascension this weekend and he tilted so hard.
Probably the best feeling in the game for me is using pretending to be a clone, then attacking then seeing the enemy team always attack the clone.
I hear
"DAAAAAAARRRRRRRRRKNEEEEEEEEEEESSSSSSSSSSSSSSS"
Leave clone, then watch as Nocturne and Illoao ult the hell out of my clone as I laugh under tower. The best part about it is that you can see the enemy slowly tilting when they realize what they just did.
It's even better in Smite where you just sit on top of your cloud sipping wine like,
"I guess i could go back done but my clone is doing so well!"