my oldest friend and i havwe always called our things The Beast (capital letters and definite article included)

the name was applied to motorbikes, cars (a little 799cc fiat), all of our bicycles of which there have been too many to count, and when i moved out- my new flat.

just make sure its more original than the name most blokes use for their manhood.

would you give it a girls name, like they do to ships and stuff?