Do you know A, B, O, AB peoples have different personality? Here is a cute comic from a Korea comic author that draws on different personality from people on different blood type. Here is the chinese version of the comic. Sorry for those that don't understand chinese.
Some are so true. Me and bf is both O blood type. Every time he drive car will scold the driver infront or saying "Eh! Why so slow one?"
For me, I always come out late, even though I prepare everything, but ended up will be also late. And like the hanging picture comic, I will ask back: "why you don't want to hang, ask me hang. "