For a New York wiseguy, he ain’t too smart.

By JEANE MACINTOSH

Federal prosecutors have moved to yank the $2.5 million bail of longtime Gambino crime-family associate Robert “Cousin Bobby” Napolitano, saying he “quickly reverted to his criminal ways” days after being sprung from the slammer last week.

In papers filed in Manhattan federal court yesterday, the feds said Napolitano, a longtime enforcer and collector for the mob, ignored a judge’s order and started fraternizing with convicted felons, asking them to help identify anyone cooperating with the government in the case against him.

Napolitano was arrested Sept. 20 on a slew of charges. This in 2011 now Napolitano is free.