Graham Hughes / Invision/AP 1 / 5
Graham Hughes / Invision/AP 1 / 5

Gerard Depardieu's public urination aboard an Air France flight from Paris to Dublin on Tuesday was no laughing matter, says a friend of the actor.

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"Gerard was upset at this and offered to clean up the mess," the actor's traveling companion, actor Edouard Baer, said in a statement. "He has prostate problems and it was very worrying and humiliating for him."

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Baer added that the 62-year-old actor was "stone-cold sober at the time. This is not the way he usually behaves."

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Since the incident, Depardieu has been ridiculed by everyone from CNN journalist Anderson Cooper to late night host Chelsea Handler.