If you want to meme-reply to a comment:
1. Click on reply.
2. Click on "Add Meme".
3. Create a meme using the popular template or upload your own image.
4. Click generate. It should appear as a small image next to the comment box. You can also type text into the comment box before you post your meme comment.
5. Click "Post Comment."
If you want to meme-reply to the featured meme:
1. Below the meme, click "Add Meme".
2. Create a meme using the popular template or upload your own image.
3. Click generate. It should appear as a small image next to the comment box. You can also type text into the comment box before you post your meme comment.
5. Click "Post Comment."
I hope this works. I'm on a phone so this is what works on a phone.