1 definition by GarfieldFan45

The word used to describe all the ridiculous/stupid actions or phrases Jon Arbuckle says in the hit comic strip, Garfield. Typically, the higher the jonsense, the clearer it is that the cartoonist Jim Davis is running out of fresh ideas.
I gotta admit, there was a lot more Jonsense in today's Garfield comic; classic Jon.
by GarfieldFan45 December 29, 2018
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