Checklist exchange

Responding to comments about the usefulness/uselessness of calling "Clear
prop," before cranking, Barney Rubble wrote
Quite often on the ramp at my home field a nearby pilot will call "All
clear" in response to my "clear", as he can see the area directly in front
of and underneath the nose. ...

I would have appreciated a negative response the three of four times I've
overlooked nose wheel chocks and had to shut down to remove them. I know
someone saw me do this at least once.