[akhleung]

Heh, when I was a kid I used to draw a lot, and I remember being bothered that I didn't know how to draw a bike, so back then I explicitly memorized the shapes (parallelogram in the back, and another line for the front wheels). Wonder if that's common for doodlers.

[notatoad]

A parallelogram is missing the seat tube, which is a fairly important part of the bike.