A satirical advertisement that says "Need A Lawyer? Call Crazy Rudy" has been spotted on a New York City subway train. 

The ad takes direct aim at President TrumpDonald John TrumpFive takeaways from Trump-Biden debate clash The Memo: Debate or debacle? Democrats rip Trump for not condemning white supremacists, Proud Boys at debate MORE's personal attorney Rudy GiulianiRudy GiulianiBiden, Trump clash at vicious, ugly debate Voters split on whether Trump, Biden will win first debate: poll The Hill's Morning Report - Sponsored by JobsOhio - Trump's tax return bombshell MORE, and includes an image of the former New York mayor with a wide-eyed expression.

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The satirical advertisement was first spotted on one of the city's subway trains Tuesday afternoon, according to the New York Daily News.

A photo of the blue-banner ad shows Giuliani alongside a list of legal services, which include "back-channel deals" and "cable news appearances." 

The ad also declares that Giuliani "has no shame" and "will work for free!"

The website listed on the advertisement directs to a page that says the "law offices of Crazy Rudy Giuliani" are in Washington, D.C.

It is unclear who is behind the advertisement and website. Upon dialing a phone number listed on the site, a voicemail message says, “You’ve called the law offices of Crazy Rudy! We specialize in back-channel deals, cable news appearances and will work when drunk."

No one immediately returned The Hill's request for comment on the advertisement. 

The ad's appearance in the New York City subway comes as Trump and Giuliani face increasing scrutiny regarding their interactions with Ukraine. A whistleblower complaint filed by an intelligence community official accuses Trump and Giuliani of a broad effort to pressure Ukrainian officials into investigating 2020 presidential candidate and former Vice President Joe BidenJoe BidenFive takeaways from Trump-Biden debate clash The Memo: Debate or debacle? Democrats rip Trump for not condemning white supremacists, Proud Boys at debate MORE and his son. 

The revelations have lead to a formal impeachment inquiry of Trump in the House. 

The House Intelligence Committee, chaired by Rep. Adam Schiff (D-Calif.), on Monday issued a subpoena for Giuliani, requesting he hand over communications dealing with his efforts to pressure Ukrainian officials. Giuliani has not said whether he will comply with the request.