I never thought I'd see the word "dirigible" worked into a tennis forum...even with all those stupid "[enter sponsor name here] cams" that are so prevalent these days.
Maybe you should have put "hot air balloon" and "blimp" as two different options?
I'm only guessing as to the spirit of the question. Too bad the question doesn't make much sense. We really could have had some odd sort of fun. <img src="smile.gif" border="0">