Do You Speak The Language?

Not all fake languages catch on.  There was Esperanto, which still hangs around amongst a few thousands weirdos, and Ubbi Dubbi, which was popularized on Zoom in the early '70s, but has any fake language been as universally embraced as Pig Latin?  

I bring this up not because I've been thinking about Pig Latin or that I even care much about it, but because I think today might be Pig Latin Day.  I took this picture at Port Authority this morning.  Come on, someone's gotta be using Pig Latin here, right?