If you are new to Korea and have wondered why Korean people especially women ask you what your blood type is well there is a reason for that.  Below is a graphic I graciously ripped off from the Japundit that lists what each person’s blood type means:

The worst blood type you can have is a type B. Type B people are supposed to make poor marriage choices due to their aledgedly unpredictable personalities.  This notion of blood type influencing personalities has even been made into a popular Korean movie, My Boyfriend is Type B. So the next time you are out on the town and someone asks for your blood type they are not sizing you up for an organ transplant, but as a compatible partner instead.  However, you might not want to tell them you are a Type B if you are.  Just give them your zodiac instead.