We all know about Britney's terrible, horrible, no good, very bad week, but the shit is not done hitting the fan quite yet. The "secret witness" in her custody battle with K. Fed — ex-bodyguard Tony Barretto — went on the Today Show this morning to discuss the drug use he's witnessed. He never really comes out and says it, but it's obvious that he's discussing cocaine. (Nobody needs to pop pills in a bathroom or behind a curtain for minutes at a time.) Barretto and his lawyer Gloria Allred claim that he has no intentions on making money on any of this info, however, he's already sold his story to News of the World, which pays "handsomely" for celeb dirt. (One of their reporters actually used that term with us before.)