So, this happened.
And it totally made my day.
I know it was meant as a joke, but strangely enough, it was always one of those things that kept me smiling on the inside for quite a while. Especially considering the person holding the sign is not a nerd, not a member of the 501st Legion, nor would he ordinarily have any comprehension about who Asajj Ventress was.
(Update: 15th August. Mr Mystery_Airport_Sign_Guy has requested that I clarify my earlier statement by saying that he is a bit of a nerd, but just hides it very well.)