[null and void]

I carry this in my wallet:

I get chuckles from everyone (even a CHP officer).

Everyone, that is, except at the airport.

NO sense of humor...

[Darksheare]

Yeah, they don't tend to have a sense of humor about such things.
Especially if yu ask to drive the plane around the tarmac, and then say, "Watch me make it do a donut!"