Top Definition
The art of sudden digression from an ordinary topic to engage in a diatribe about a ridiculous subject or idea and/or the narration of a sexy story of coolness cubed.
Tom was teaching us a lesson on bridges when he say a bird and went on a lanngent, telling us about when he hunts crows with a shotgun.
by Sapper Ugly June 03, 2009
1 more definition
to depart from the original direction of conversation at a sharp angle without any apparent reason or warning and return to topic with no explanation or apology.
The instructor was teaching us how to conduct activities safely when he went on a Lanngent and started talking about a boss he used to have. No tie in whatsoever and after back to the original topic like nothing happened.
by ttttttttttom May 27, 2009

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