2. Google the GIF you're looking for, and find one that suits you. If the GIF you want is one you created, look below for further instructions.
Once you find a GIF you like, right-click on it or tap and hold and open it in a new tab.
Copy the link, then paste the it into the "Image URL" text box in your discussion / comment / wall comment.
Your GIF is uploaded and ready to go!
If you want to post a GIF you yourself created, it's a bit more tricky. You have to upload your GIF to an image website (imgur.com is my choice). Once uploaded, do the same thing. Right-click or tap and hold on your GIF to open it in a new tab, copy its link, and post it on here in the same way.