If you have a secret tell it to Carson Palmer. The Cardinals quarterback knows all about keeping them and not saying a word.

Asked to explain why he wanted out of Cincinnati so badly two years ago after spending eight seasons with the Bengals Palmer may as well have pasted Super Glue across his lips. He still isn’t talking about it.

He wouldn’t do it the past two seasons which he spent with the Raiders. And he isn’t talking about it now either.

“There’s going to be a time and place for me to speak my piece on that” Palmer told the Arizona Republic. “Now is not the time but there definitely will be a time when I’ll talk.

“I’m a part of this team and this organization now and my focus is this next game and the upcoming season. I’m going to talk about it but it’s just not the right time. I know how it will be taken and perceived.”

All Palmer would add is that there were many mistruths surrounding his end of days with the Bengals and about how he “threatened” to retire if the team didn’t trade him.

They ultimately did just that but Palmer has never come out and said exactly why he needed to be free from wearing the Bengals’ orange and black stripes.

Maybe there were just too many fights with stodgy owner Mike Brown about the lack of a decent supporting cast around him. Maybe it was the Bengals’ penchant for bumbling things in the draft or that unprecedented and embarrassing run where their players seemed to be getting arrested every other week.

It could have been that he grew tired of coach Marvin Lewis and couldn’t understand how Lewis was signed to a contract extension following a miserable 4-12 season in 2010. Maybe he just got fed up with the antics of wide receivers Chad Johnson and Terrell Owens although he recently said they were good teammates.

There was even a rumor that his wife Shaelyn wanted out of Cincinnati because she was mad that fans dumped garbage on the Palmers’ front lawn after a particularly bad loss.

Whatever it was there were enough hard knocks to make Palmer turn his back on $50 million — the salary he was guaranteed over the next four years.

His holdout became ugly with fans and even some players and NFL analysts branding him as a quitter and just another spoiled rich crybaby from USC.

Not true said Cardinals defensive end Frostee Rucker who spent five seasons with Palmer in Cincinnati and one year with him at USC.

“Sometimes it’s not so much quitting on your team it’s having to put your foot down and that’s a hard thing to do in professional sports” Rucker said. “I know how competitive he is and how hard he works at his craft.