Furthermore, the lyric wasn't referring to actual "blood rushing out" it was referring to blood rushing through one's veins in the "heat of the moment."
But yeah, I agree it is about the context not the actual word.
Don't worry though, have you ever seen that one backstreet boy(kevin?) try and play the piano with the song live just because playig the instrument is the "cool thing to do" now... it is so sad, he cant even sing becuase he is too focused on playing his three chords right.
I laugh every time i see them on any live talk show "Trying to play"...