Guardian Angels founder Curtis Sliwa was busted Tuesday for trying to serve Mayor Bill de Blasio with a lawsuit outside Gracie Mansion.

The outspoken activist was given a desk-appearance ticket for disorderly conduct for attempting to toss the court papers at de Blasio’s motorcade around 8:30 a.m.

“He ordered them to cuff me and arrest me and called for cop cars from the 19th Precinct. You would have thought I was Pablo Shorty Guzman,” Sliwa told reporters after he was released from the 19th Precinct, in an apparent reference to jailed Mexican drug lord Joaquin “El Chapo” Guzman. “There were 20 officers and four cars.”

Sliwa claimed he was able to throw the suit — which seeks to have de Blasio removed from the Working Families Party ticket on a technicality — at the mayor’s car as he took off from Gracie.

“I yelled, ‘I’m serving you, Mr. Mayor,'” said Sliwa, who also plans to sue Public Advocate Letitia James and city Comptroller Scott Stringer. “That’s why we are serving them because they shouldn’t be on the ballot either if they are going to knock off our candidates.”

Video of Sliwa’s early-morning collar was posted on YouTube.

“This is what you get. You try to serve papers to the mayor and they lock you up,” said Sliwa, wearing his signature red beret and jacket. “Mayor’s late. On his way to Park Slope to do his workout, probably won’t get to City Hall ‘til 11. And he locks me up. I’ve been up since 5 o’clock this morning. Nice guy, stand-up guy.”

Meanwhile, Michel Faulkner, a candidate for New York City comptroller, tweeted about the incident.

“Curtis Sliwa was just arrested outside Gracie Mansion for serving Bill de Blasio with papers to disqualify him for WFP ballot line#yeswewill,” Faulkner wrote.

Sliwa is due in Manhattan criminal court Sept. 25.