Unit Police
A 'Unit Police' officer cites a driver for speed in furlongs per fortnight, a unit nobody can picture.
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Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2017-05-19-unit-police/ (CC BY-NC 4.0)Transcript
Officer (cap: "Unit Police"): "Were you aware you were traveling more than 90 furlongs per fortnight?"
Driver: "To be honest, now that you've told me, I'm still not sure I'm aware of it."