A "Fredo Unhinged" T-shirt is being sold on the official Donald Trump re-election website following a viral video of CNN journalist Chris Cuomo yelling at an apparent stranger who called him "Fredo".

Trump has also taken to Twitter to mock Cuomo and criticize CNN's defense of him.

Trump’s feud with CNN only intensified after Cuomo exploded at the man in the video, saying “I’ll (expletive) throw you down these stairs like a (expletive) punk.”

Cuomo also said “Fredo” is an ethnic slur against Italians. The term is a reference to a character in “The Godfather.” Trump has also retweeted several others criticizing Cuomo.

The shirt features screengrabs of Cuomo’s face in the video and is selling for $34 for sizes small through extra-large on Trump’s online merchandise store. A product description reads, “The truth hurts. He totally lost it. Help us annoy Chris Cuomo and buy your ‘Fredo Unhinged Tee’ now!”

Cuomo responded to the video on Twitter: “I should be better than the guys baiting me.”

More:Chris Cuomo said 'Fredo' is an ethnic slur as he erupted in anger in a viral video. Is it?