It's good to know where to find something you don't know. Most people (and I do it too) look things up on the internet. It can be very helpful sometimes. But I think the below is a little overkill. Judge for yourself.
35. Do you have a blue or black area on your skin, and did the discoloration occur after the area had been hit?
If you answer yes, this is the wisdom they share.
This is probably a BRUISE.
Naw, really, you don't say. :)