Go into your Brickshelf folder, and click on the picture until the only thing in your browser is the photo. This means there is no brickshelf text at all, and the background is white. The url should end in .jpg or .png or some other image file type. Now copy that url, edit your first post, and paste it where you put the other urls.
Often, literally, a pillow fight but may include similar situations like volleyball, particularly when wardrobe is skimpy and the action is bouncy.