what happens when players go wrong at the same time ? Who turns a card ?
It's the person who was first Kamba-ed.
(This is why it's important to shout "KAMBA" when you see someone go wrong).
When someone shouts "KAMBA", everyone stops playing and the person who shouted points out the problem. If someone else went wrong at the same time but wasn't Kamba-ed then they escape any penalty.