VIDEO: Jeremy Piven Screams & Swears At Tonight Show Intern In Fishy Prank

Jeremy Piven channeled his inner "Ari Gold" during an appearance on The Tonight Show with Jay Leno Wednesday night, taking part in a hilarious, although slightly mean-spirited prank directed at one of the show's new interns - a sweet kid from Ohio.

Watch the clip on RadarOnline.com

In the prank, Piven screams and swears at the intern after the kid escorts Piven to his dressing room backstage at The Tonight Show, and Piven discovers that a plate of sushi has been left in the room.

You'll recall that in late 2008, the Chicago native claimed he was stricken with Mercury poisoning after a bad bout with the Japanese delicacy, which caused him to bow out of a Broadway production of Speed The Plow, and led to a subsequent legal battle between the Entourage star and the play's producers.

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You'll recall that in late 2008, the Chicago native claimed he was stricken with Mercury poisoning after a bad bout with the Japanese delicacy, which caused him to bow out of a Broadway production of Speed The Plow, and led to a subsequent legal battle between the Entourage star and the play's producers.

After Piven sees the sushi, he rudely confronts the  scared intern, saying,  "Did you put this here? I had Mercury poisoning, you know?" Piven then  unleashes a foul verbal tirade consistent with his arrogant Entourage character.

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The  poor intern looks like a deer in the headlights as Piven curses  up a storm until putting on a happy face for Jay Leno  when he stops by Piven's dressing room. As soon as Leno leaves, Piven then continues to lay into the intern, and at one point, he even tosses a cup of water in the intern's face (That’s show biz for ya!).