Via NFL.com:
“[Mahomes] tries it all the time because he keeps lobbying for Coach Reid to put it in the system,” Chiefs quarterback Chad Henne told Palmer. “He tells Coach Reid, ‘I can option this way and then throw it back this way’, and I’m like, ‘Ahhh, let’s just take care of the ball.’”
“I think he’s got a little trick up his sleeve, but I don’t want to spoil nothing,” receiver Demarcus Robinson told Palmer, laughing as Robinson said it. “He can get it down field a good 20 yards [behind his back] and he’s pretty accurate, too, honestly.”