Are the Bills mentally weak?

Buffalo Bills players had trouble explaining what happened after Sunday's epic collapse to the New England Patriots. The Bills allowed 45 points in the second half during a 52-28 blowout.

But Bills head coach Chan Gailey thinks he knows the answer. According to Gailey, the Bills are not a mentally tough team.

"You can't be ahead 21-7 in the third quarter. And if we're mentally tough like we need to be, that game doesn't end up the way it ended," Gailey said, according to the Associated Press. "And that's my responsibility, to work on the mental toughness and the mind-set of this football team."

Are the Bills a mentally weak team? There aren't many other ways to explain giving up 35 unanswered points at home. Once the Patriots got rolling, the Bills folded.

It's rare for a head coach to challenge his team's toughness so publicly. Perhaps Gailey wanted to send his locker room a message through the media. Buffalo has its toughest stretch of the season coming up where it plays four of the next five games on the road.

As we wrote on Monday, this is gut-check time for the Bills. Their toughness is being challenged by the head coach, and I'm curious to see how they respond on the road against the rugged San Francisco 49ers.