This is waaaaay offsides.

Parents of the hundreds of teens who broke into and destroyed former NFLer Brian Holloway’s upstate vacation home are threatening to sue him for outing their brats on Twitter — saying he’s spoiling their chances of getting into college.

“You would not believe the calls that have come in, threatening to firebomb me or hurt or sue me — any manner of things,” the stunned Holloway told The Post Thursday as he toiled away cleaning up the damage at his 200-acre spread in Rensselaer County.

“Some complained that this will ruin their kids’ college plans. Others have threatened me, saying ‘Take my kid’s name down or I’m gonna press charges against you.’

“You’re going to press charges against me? C’mon, now. If that were one of my children, they would be doing a year’s worth of apologizing,” said Holloway, a father of eight.

The former New England Patriots offensive lineman learned of the debauched bash — attended by some 200-300 trespassers — after many of the punks gleefully posted photos and texts on social media from inside the out-of-control crash party that left 10 shattered windows, urine-soaked carpets, gouged oak floors and walls covered in graffiti and holes.

Holloway estimates the damage at more than $20,000 and took to social media to try to track down the vandals so they could be held responsible.

A handful of parents have apologized for their kids’ actions — saying they hadn’t known about the party or that their kids lied to them, he said.

But only one parent and child showed up this week at a planned cleanup of the stately Stephentown home, about 25 miles from Albany and near the Massachusetts border.

Holloway said he has hauled away more than 10 massive trash bags of liquor bottles, and found drug paraphernalia strewn across his property.

“How is this OK? How did we lose our way, that this is acceptable behavior? And how do we find our way back?” said Holloway, who had to delay last week’s planned launch of his new women’s-oriented football site, HerLeague.net, to fly to New York and deal with the mess and an ongoing police probe.

The drama started on Aug. 31, when Holloway — home with his wife and kids at their year-round Lutz, Fla., home — learned from his 19-year-old son that dozens of kids were tweeting about a party at the New York country house.

Holloway watched in disbelief as the scene unfolded on Twitter. The revelers came from at least nine surrounding high schools and a local college.

“They had planned to stay there for three full days, if you can believe that,” Holloway said.

He was trying to reach local cops when someone tweeted that sheriff’s officers were on the scene.

“The sheriff came and got everyone out of the house without injury or violence, which is impressive with the amount of drinking and drugs going down and kids in a very dangerous state of mind,” Holloway said.

Holloway, who found “170 tweets from the party within its first three hours,” re-posted them to a Web site to help identify the house crashers and urge them to change their behavior.

The Rensselaer County Sheriff’s Office confirmed that the bash was under investigation.

“My intention is to help set them on a better path,” Holloway said of the public posting.

No arrests have yet been made.

Holloway is planning a picnic for military personnel and their families Saturday at the upstate property.

“I want the scar of this ­removed,” he said.