You were very kind to research that for Keyhopper, but I am pretty sure Key was just making a little joke. He claimed that graffitist in his area was spraypainting “Q” all over town. When Key asked about removing the paint from his jeans he was implying that he was the “Q” painter. Get it?
[Pretty sure Key was just making a little joke.]
I knew it was a joke, just the Home Economist coming out of me. :)