WATCH: Joe Biden Snaps on Reporter, Gets Physical Over Bernie Feud

At a campaign event in Iowa on Wednesday, Democratic frontrunner Joe Biden lost his cool when a reporter asked him about his apparent feud with fellow candidate Sen. Bernie Sanders (I-VT).

“Yesterday, yesterday, you said you accepted Bernie’s apology. Now you’re attacking him. Why are you doing that?” CBS reporter Ed O’Keefe asked Biden, according to The New York Post. “Why wasn’t his apology enough, Mr. Vice President? Why attack Sanders?”

An agitated Biden walked toward the reporter, placed his hands on O’Keefe’s chest, and mockingly shouted, “Why, why, why, why, why, why, why! You’re getting nervous, man. Calm down! It’s okay!”

The Democrat then complained that Sanders only “apologized for saying that I was corrupt, he didn’t mention anything about whether or not I was telling the truth about Social Security.”

The former VP, with a clenched fist, gave O’Keefe a light punch on the chest before turning around and leaving the area.

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