In a back room of the clubhouse Saturday morning, the razor came out and Papelbon sheepishly came out with his new 'do.
Who gave him the Mohawk?
"No comment, no comment," said Papelbon, who entered Saturday's game with a Major League-leading seven saves.
He later muttered "Rock" under his breath and said, "I'll just say he's a catcher. I'll just give you that. You guys can figure it out."
Logic would seem to indicate that bullpen catcher Jason Larocque was the man who scalped Papelbon.
So what happened with this wager with Youkilis?
"Unfortunately, I ended up winning," said Papelbon. "He had to hit .350 with five bombs."
It is unclear what price Youkilis might have paid, considering his head was recently shaved.
Papelbon, who has given up just four hits over 10 1/3 innings, wasn't too worried about his new look.
"I'm all good. I'm married now, man. All I've got is one person to answer to," he said.
Papelbon wasn't sure how long he'd keep the Mohawk.
"I don't know. We'll see. We'll play it by ear," said Papelbon.
Keith Foulke, who has had plenty of success as a closer, seemed bemused by the whole thing.
"I think I've had enough time [in the Major Leagues] where I don't make silly bets like that. If you're gonna pitch that well and make bets, it's not to pitch well and embarrass yourself," laughed Foulke. "Like I said, I don't think it looks that bad on him, I think it fits his personality."