At the time he was taken prisoner by the Starks, Jaime was a beardless knight with long, golden hair. Shortly after escaping Riverrun with Brienne and his ridiculous ass-kissing Cousin Cleos Frey, Jaime has his cousin shave his head clean, but keeps the beard he grew during his captivity, hoping it makes him unrecognizable. This is an exchange that happens when Riverrun’s captain of the guard catches up to their boat:
“Come to take you back, Kingslayer,” Ser Robin Ryger bellowed. “How is it that you’ve lost your golden hair?”
“I hope to blind my enemies with the sheen off my head. It’s worked well enough for you.”
BECAUSE ROBIN RYGER IS BALD, GET IT?!