First, Massachusetts Sen. Scott Brown (R-Hey, It Was Just a Procedural Vote) got suckered.

Then he got sucker-punched.

Start with Brown’s vote against repealing the federal government’s Don’t Ask, Don’t Tell (DADT) policy regarding gays in the military.

From Friday’s Boston Globe:

Senator Scott Brown of Massachusetts joined 38 other Republicans and Democrat Joe Manchin of West Virginia in the filibuster. Brown had declared his support of the repeal last week but joined his fellow Republicans in opposing it yesterday because, his spokesman said, Democrats had not brought an extension of income-tax cuts and a spending bill to the floor first, as the GOP had demanded.

Brown “supports repealing ‘don’t ask, don’t tell’ once those issues have been addressed,’’ his press secretary, Colin Reed, said in a prepared statement after the vote.

In other words, Don’t Tax, Don’t Smell.

Problem is, Brown might not get another bite at the DADT apple, which would mean he was for repealing DADT before he was against it.

(Paging John Kerry. Paging Sen. John Kerry.)

Enter an outfit called the Agenda Project, which describes itself this way:

The Agenda Project’s goal is to build a powerful, intelligent, well-connected political movement capable of identifying and advancing rational, effective ideas in the public debate and in so doing ensure our country’s enduring success.

In other words, blah blah blah.

But the group is running an ad (a $20,000 “news ad,” actually) in the D.C. market that whacks Scott Brown for being co-opted by the Beltway-industrial complex (via ABC’s The Note and Roll Call ).

Partial transcript of the narration:

Scott Brown said he was like us — he said he would be our Senator. He said he would lower our taxes. But ‘Mister I drive a truck’ is totally full of it . . .

“Looks like Mister I’m Just Like You drove his truck to Washington and turned into Senator I’m Just Like Them. … Tell Mister Tough Guy to start acting like our Senator or come 2012 he won’t be.

Dream on.

Still, you have to wonder:

Is Scott Brown, who’s dumb as a Daily Kos post, really up to the job?

Discuss among yourselves.