Looks like this furry fiend is having your brain for lunch. Press the button on this Talking Rat Cap, and the rat joyfully bobs up and down with beady bright red eyes, saying one of four demented phrases. Hilariously hideous all by itself or as part of a costume.
http://www.halloweenonly.com/website/store/promotion.asp?source_code=ZH0098&item_no=81714&entry=findgift&WT.srch=1 (with video) -via Everlasting Blort