Definition of "fruitloop"

I don't want Jimmy's attorney to rip you up and down in front of a jury and make you out to be, frankly, a vicious and insane fruitloop […]

1983, John Gassner, Best American Plays

Can't have no fruitloop with his finger on the button. Cokeheads maybe, but not a fruitloop. This country has high standards.

2003, Ralph Lopez, American Dream

That poor guy is already busting his hump, learning his job, working sixteen or eighteen hours a day for some fruitloop who throws pens when he gets mad.

2005, Jacey Eckhart, The Homefront Club

Representing the fruitloop fringe of the New Age, she claimed she was an "Arcturian ambassador," receiving transmissions from an Arcturian mothership […]

2006, Daniel Pinchbeck, 2012: The Return of Quetzalcoatl