Elf

My phrasebook has German numbers in it. Eine, zwie, drei, etc. The word for "eleven" in German is "elf". Andrea knows a little German, so I asked her smartassedly, "if eleven is 'elf', how do you say 'elf' in German?" She paused for a moment. Her eyes shifted up while she accessed her mental translation dictionary, and then she replied, "Eleven." I don't think she even smiled at her own joke...