Democrat socialist and self-described “nepo-baby” Zohran Mamdani fronted the first general mayoral election debate desperately wanting voters “to see him as tough” as he threw punches at his “bedraggled” rival, ex-Gov. Andrew Cuomo, a body language expert told The Post.

“Mamdani was, ironically or purposefully, dressed in black like a villain,” brain and body language expert and psychiatrist Carole Lieberman said in the wake of Thursday night’s showdown .

“He was either showing his true colors unconsciously or wanted viewers to see him as tough.” 3

The 33-year-old upstart — whose mom is an Academy Award- and Golden Globe-nominated filmmaker, and whose dad is an author and chaired professor at Columbia University — has even joked that he has benefited from nepotism .

He has al

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