bull session

bull session idiom
An informal discussion, as in College students love late-night bull sessions about anything and everything, from professors to poetry to politics. This expression originally referred to an exchange of opinions and anecdotes, including stories of sexual prowess, by men, and then came to be used more broadly. [Slang; c. 1915]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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