I know this is probably a really weird question, but I need a caption for my Facebook picture..
To add a caption on Facebook picture, you need to use the edit option on the upper side of the picture. Just open the picture you want to put the caption on and write on the "Write something" segment. Read http://smallbusiness.chron.com/add-caption-facebook-picture-posting-31589.html.
What do you want the caption to be, hermana.