Andrew Luck’s legend is growing.

Sure, there’s buzz about how he has thrown for more yards in his first three seasons than anyone in NFL history. Or the fact he’s led the Indianapolis Colts to the playoffs in each of his NFL seasons, after clinching a spot this year with Sunday’s win. But among NFL players, the gossip around Luck concerns a peculiar brand of on-field chatter so confusing and brilliant that no one knows quite what to make of it.

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