Author! Author! Rob Gronkowski poses for a photo at the SiriusXM Studio. (Cindy Ord / Getty Images for SiriusXM)

The summer of Gronk is winding down with NFL training camp approaching, but Rob Gronkowski found time for a quick tour to promote his new book.

You know, the one he co-wote with Jason Rosenhaus. Called “It’s Good to be Gronk” in perhaps the most truthful title ever, Gronk ‘fessed that he may or may not have read all of it. You judge whether he’s being serious or not.

“About like 80 percent of it,” Gronkowski said in a “Town Hall” hosted by Maria Menounos on Sirius XM’s Mad Dog Sports Radio. “I’m not going to lie about it. That’s what the book is — it’s all truthful in there. It’s no sugarcoating or anything. It doesn’t make my image look good, it’s no false image in there. I ain’t going to lie either, I only read like 80 percent of it, but I know what better parts were and everything; what it’s all about. It was a quick deadline. I couldn’t get to it all.”

At least he didn’t pull a Barkley and said he’d been misquoted in his own autobiography.

The book is only 218 pages long and features photos, too, but Gronk has been a busy man, what with twerking his way through “Family Feud” and across America. It’s going to be a sad day when he reports to camp and Bill Belichick shuts him down.