I call my bike Flash, named after Flash Gordon when I saw him wearing red in the film. On my number plate I have the name Flash written just below the reg no.
I haven't been very imaginative with my DSC nickname mind you....
I get referred to as a tractor driver more often than not! Skint might be another good one as well! My bike is called flower, short for sunflower because she's yellow and beautiful and makes me smile whenever I see her!