Heh, I don't have enough exes to name my bikes after, LOL. Only two of my bikes have names; my better half names most of his, but not all of his have names either. The only one of my bikes I tend to anthropomorphize is the one I use for long distance events... so maybe anthropomorphizing a bicycle is somewhat related to the fact that you get a little nutty after you've been on one for two or three days with barely any sleep.
I do sort of wonder if the snakes named after desserts are partly because it makes them sound less scary.
"Meet my snake, his name is Spike"
"Aaaahhhh! A snake!!"
versus
"This is my snake, her name is Cupcake"
"Awww, she looks so sweet"