- an informal, spontaneous discussion.
Origin of bull session
- informal, mainly US and Canadian an informal discussion, often among men
Idioms and Phrases with bull session
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]