His campaign said Arpaio couldn't fully understand what Baron Cohen was saying, but that the campaign wasn't upset about it.
Others who have been tricked by Cohen for his show include one-time GOP vice presidential candidate Sarah Palin.
Last month, Georgia state lawmaker Jason Spencer resigned after being seen yelling racial slurs and dropping his trousers on the show after being told by one of Cohen's personas that it would intimidate terrorists. At one point on the video, Cohen has Arpaio talking to a tiny Shopkins donut as if it were an actual person, about the need for guns as guns are a protected right and in order to follow the law, people need access to guns.
This combination photo shows Sacha Baron Cohen at the 64th Annual Golden Globe Awards in Beverly Hills, Calif., on January 15, 2007, left, and Cohen portraying retired Israeli Colonel Erran Morad in a still from the Showtime series, "Who Is America?".
Israeli strike kills 2 Hamas militants in Gaza
Israeli forces stop and search a Palestinian boy at the entrance of Damascus Gate, outside Jerusalem's Old City. In turn, earlier, the UN General Assembly adopted a resolution condemning Israel for actions in Gaza .
The show also features Arpaio arguing with a plastic Shopkins toy - an anti-firearms "D'lish Doughnut".
Afterward, OMGWhizzBoyOMG tells Arpaio that he has 43 guns to prepare for the coming race war.
Cohen offered D'lish Donut's reply: "But I want the guns to be taken back because they are risky!"
He also gives "Finnish" addresses to the camera throughout the segment, which are clearly gibberish.
Arpaio revealed himself to be among Cohen's victims in an interview last month with Breitbart News.
The former lawman announced in January that he meant to run for US Senate - though he might find his credibility rattled once again after being embarrassed by Baron Cohen.
Cohen interviewed Arpaio, 86, in a segment that aired on Sunday as part of his "Who Is America?" series on Showtime.
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