*The public disagreement between Wyclef Jean and Sean Penn over the rapper’s presidential bid in Haiti just hit another level.

Responding to Penn’s criticism at a Hot 97 concert over the weekend, Wyclef alleged Penn was “too busy sniffing cocaine” to notice Jean’s presence in Haiti after the January earthquake. [See video below.]

Wyclef changed the lyrics to his 2004 hit “President,” singing: “I got a message for Sean Penn: Maybe he ain’t see me in Haiti because he was too busy sniffing cocaine.”

Penn, who has spent months helping out in Haiti since the earthquake, was quick with a statement from his rep denying that he uses cocaine. It read:

“Mr. Jean is clearly unfamiliar with the physical demands put upon volunteers in Haiti. As aid workers there, the notion of depleting the body’s immune system thru the use of illicit drugs is ludicrous. More specifically, J/P Haitian Relief Organization (a.k.a. JPHRO) has a ZERO tolerance policy for any and all illegal drugs. As the leader of this organization, Sean Penn has not only set this policy, but adheres to it. That Mr. Jean would make such a false accusation is reckless and saddening, but not surprising.”

During the Hot 97 concert, Wyclef also blasted his former Fugees bandmate Pras, who also spoke out against ‘Clef’s now-defunct presidential campaign.

“I got a message for Praswell: Even though you don’t want to support me, I got love for you, even though you only kicked 8 bars in the Fugees,” sang Wyclef.

Jean was disqualified from the presidential running when he did not meet Haitian residency requirements.

As previously reported, Penn expressed concern over Wyclef presidential candidacy in a CNN interview.

“I have to say I’m very suspicious of it, simply because he, as an ambassador at large, has been virtually silent. For those of us in Haiti, he has been a non-presence,” Penn said on the same “Larry King Live” broadcast that featured Wyclef’s announcement.

Shortly after, Pras, one-third of The Fugees along with Wyclef and Lauryn Hill, also expressed doubts about the campaign. “I love Wyclef to death. I was one of his best men along with his brother at his wedding,” he told Vulture. “But I want to make this clear: I would rather lose Wyclef as a friend, brother, and save a nation of 10 million Haitians.”