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Is this really from butting heads (disagreeing) as suggested, and not from the slang butt for the rear end (like having one's head up one's butt in ignorance, or a particularly ugly face)? Equinox 21:40, 17 April 2009 (UTC)

Yes check.svg Done Seems to have been fixed. Equinox 03:17, 23 July 2016 (UTC)

Inaccurate definition[edit]

But there is one talk show host that's using as authoritative (it even beat our American Heritage Dictionary in his realm of authorities).