a ***** wearing a red t-shirt?
Lots of stuff.
I think bloods actually blue or black or something, it turns red on air contact :)
Oh :O, I never knew that, learn something new everyday lol
blood going to the heart is blue and blood leaving the heart is red or vice versa.
Actually blood is red because of its iron content. Humans have almost the exact same content of iron as the Earth from which we come.