Originally Posted by ace3

When flying in F-class on AA, i've seen a handful of celebrities, and they're always drinking out of these large, granite-grey, coffee mugs.

it always struck me as odd, since i've never seen anyone else (regular joe) get served in these cups. Are these for "special guests" or maybe million mile flyers or something? Or, is it simply coffee?

odd question, just found it interesting. anyone know?