If Super Bowl 50 really was the last game Peyton Manning will ever play in the NFL -- and almost everyone thinks it was -- then there really is only one proper way to send him off.

By congratulating him on Denvers win with a hilarious forehead joke.

Leave it to PGA Tour star Jordan Spieth, another self-proclaimed big forehead, to do the honors.

Manning will keep everyone waiting a little while longer on his announcement, but he might have tipped off his retirement by plugging a beer in a postgame interview. We'll know soon enough.