9. Sean Penn on George W. Bush's blood-soiled underwear
Penn has sounded off on plenty of political issues, but his greatest rant was in prose. In March 2007, he wrote an open letter to the then president calling his administration the real evildoers. In the second paragraph he calls Bush's media supporters "those who bathe in the moisture of your soiled and bloodstained underwear," and it goes on from there!
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