A warning sign at Edinburgh Airport. For me it summed up being tall :-)

Apologies for going off topic slightly, but even before you get on the plane, do any other tall people have to duck whilst walking from the gate desks through the gantry air bridge to the door of the plane, for hanging signs or that in the gantry.

I also remember a good few years ago walking in London Heathrow for the BMI flights, I'd zig zag along the terminal, to avoid the low hanging bright yellow gate/information signs.