According to the Wikipedia:
Zoolander Phone is a term often used to describe any extremely small and new mobile phone. The term is a reference to the film "Zoolander" (Ben Stiller), in which the title character's (played by Ben Stiller) humorously miniature cell phone is a joke on the continually smaller phones released by phone manufacturers.
(picture taken on eatliver, but this is not the real Zoolander phone, only a look-alike)
Why do I blog this? I was only looking for a picture of an extremely small cell phone to illustrate how mobile UI are tough.