The old-school hip-hop group “Whodini” had a song during the infancy of rap with the not-so-subtle title “The freaks come out at night.” Thanks to the utterances of Donald Trump, Sarah Palin and U.S. Senate candidate Richard Mourdock of Indiana, looks like the freaks also come out 13 days before a presidential election.

After hyping a big announcement that he promised would rock the presidential campaign, The Donald sat behind his grand desk in his eponymous tower’s office to deliver a dud.

If Barack Obama opens up and gives his college records and applications, and if he gives his passport applications and records, I will give to a charity of his choice, inner city children in Chicago, American Cancer Society, AIDS research, anything he wants, a check immediately for $5 million.

C’mon, man! That’s all Trump’s got. He has dabbled in this racist insult since before his racist birther gambit imploded last year. Trump has given the president until 5 p.m. on Oct. 31. Talk about trick or treat. Trump is more likely to run into a school bus filled with children in Obama Halloween masks than actually get a response from the president of the United States to his disrespectful, undignified and demeaning request.

Palin’s penchant for boneheaded pronouncements knows no bounds. Today, she climbed atop her Facebook soapbox to declare “Obama's Shuck and Jive Ends With Benghazi Lies.” There are plenty of questions that need to be answered about the events of Sept. 11, 2012, which saw four Americans, including the U.S. ambassador, killed. But The Post’s David Ignatius dispelled the notion that the administration has been playing fast and loose with the truth over the weekend. And the administration, from the president on down called the horror an “act of terror” from the beginning.

What got me about Palin’s scribbled conniption was her use of “shuck and jive”. She showed great restraint in not also calling the president “lazy”and “shiftless” in exercising his responsibilities as commander in chief. “Why the lies? Why the cover up?,” the former half-term governor of Alaska and former reality television star demanded. “Why the idiocy?” has been my plaint since she darkened the national political stage four years ago.

Mourdock rounds out the field of freaks with his Todd Akin-brand of rape talk at a debate last night in Indiana.

The only exception I have to have an abortion is in the case of the life of the mother....I struggled with it myself for a long time, but I came to realize life is that gift from God. I think that even when life begins in that horrible situation of rape, that it is something that God intended to happen.

This is on par with Akin’s “legitimate rape” nonsense from the summer. Republican nominee Mitt Romney distanced himself from the Missouri U.S. senate candidate’s remarks just as he has done with Mourdock now. But he’s not pulling his ad in support of Mourdock that just went on the air yesterday, which is manna from heaven for Democrats.

And I haven’t even touched the Gloria Allred antics today in Massachusetts involving divorce, Staples, Bain and Romney. When she appears, you know it can’t be good.