its like the meme you can actually caption the meme that is in it just right click it and then it has an option that you can cap

Don't you mean the "add meme" button?

Try using "Add Meme" or "Add Image", such as a meme or gif, and you can use anything, like Kids shows, Adult stuff, or any memes that are overused, but except pornography things. Then you can comment it now.