looney-tunes

Etymology
From the adjective looney tunes.

Noun

 * 1)  Loony, crazy, insane person.
 * 2) * 2002, David A. Enyart, Creative Anticipation: Narrative Sermon Designs for Telling the Story, Xlibris Corporation, ISBN 1401059783, page 155,
 * Have we, as our culture so often claims, committed our lives to absurdity? Are we religious Looney-Tunes marching to the beat of a demonic drummer?
 * 1) * 2002, Robert S. Levinson, Hot Paint: A Neil Gulliver and Stevie Marriner Novel, Tor/Forge, ISBN 0765302314, page 295,
 * Like that looney-tunes in Salt Lake City killed by the police after he gunned down a woman and a security guard and wounded four others at the Mormon Family History Library.
 * 1) * 2005, Jack Myers, Row House Days: Tales from a Southwest Philadelphia Childhoo, Infinity Publishing, ISBN 0741424797, page 229,
 * Otherwise, if you let these looney-tunes have the general run of the everyday world, there's no telling what kinds of destruction they may cause if left unchecked.