A lot like mansplaining, however doing it with the information in front of you because you have a bad memory
Is Derek mansplaining?
Nah, he's katsplaining, look he's got Wikipedia open.
by AcheronianJ June 8, 2019
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The act of explaining things that do not need an explanation and could be assumed just by the initial statement alone.
Dude, Kat just katsplained to me why she bought toothpaste.

Kat - Hi Jokes, I bought toothpaste today at the store. I will brush my teeth with it.
by hammerdicks January 5, 2023
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