When someone launches into a whole documentary when explaining something.

The gender free version of mansplaining.
"I asked what Minecraft was, and he gave me a talkumentary."
"It was the best explanation I've heard, it was basically a talkumentary."
"It went on and on, like a talkumentary."
by Get-a-handle April 1, 2019
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A documentary recorded in an audio-only format.
An audiobook.
An audio track comprised mainly of verbal dialogue
Instead of listening to the radio, the driver popped in a CD of Carl Sagan's Pale Blue Dot, his favourite talkumentary in order to entertain the fare over the course of a long trip.
by tristanmac November 23, 2010
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When someone over explains something
That guy gave a full on talkumentary on nodejs
by analogrithems April 14, 2017
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