AP

You’ll have to pardon the Jaguars if they don’t know how to act.

Because the cry of the old and cranky — “act like you’ve been there before” — doesn’t apply to them, since they haven’t played meaningful post-Thanksgiving football in ages.

“We haven’t been in this situation for a long time,” linebacker Paul Posluszny said, via Ryan O’Halloran of the Florida Times-Union. “That’s great for the organization, great for this environment, great for these guys to be a part of and to now [say], ‘Hey, this is all going to count late in the year.’

“It’s an awesome feeling to have.”

And a new one, for most of them.

The Jaguars haven’t had a winning season or a playoff berth since 2007, and have averaged 11 losses per season each year since then. That’s a lot of bad football.

The Jaguars are still just 4-6, but they have won three of their last four, and because they live in the AFC South, they have a shot at the playoffs.

“It’s big for everybody’s confidence,” center Stefen Wisniewski said. “Obviously, with our division, we still have a great shot and these last two games were just so big for confidence, but to stay in it.”

With a mini-bye to prepare for the Chargers followed by a trip to the Titans and home games against the Colts and Falcons, the Jaguars actually have a shot at something even more rare — meaningful post-Christmas football.