hey, i hope you don't mind me posting.....but PHO is the national dish of Vietnam (pronounced FA). It's a broth with all sorts of things in it. Hope that helps!
Well I ate plenty of Pho when I was in Vietnam, but had not idea what that sign meant when I saw it. Dec and I went home and looked it up and I am afraid you are right it is a homophone: What the pho... What the fu! Gotta love Wikipedia.