"What is your blood type?"
If I ask this question in Japan,
most people could answer immediately. 
Like astrology, you can guess the characters as well.
For example, blood type A people are well-organized
or blood type O are warm-hearted and so on.
However, believe it or not, my darling who is an
English man didn't know his blood type. 
He said,
"Oh, no body knows our blood type in England."
But I wondered whether it was all right or not.
Then one of my friend working as a nurse said,
"It's not all right at all
Suppose he is involved in an accident
and needs to have blood transfusion,
it's the life-or-death matter
"
Then I took my darling to a hospital to have his blood check.
We found out that his blood type is O.
Actually, my blood type is O as well.
So when the blood transfusion is needed,
he can use mine. 
Do you know your darling's blood type?
