Actually, When it matches the name, it doesn't matter how you search it up. It doesn't have to be 1 search name at a time, but it can be up to 2-8 names at a time. Imgflip never lies, you can still match the names to all templates. That's all it is.
I searched this "Dark Humor" so this is how's an example of come up with an alternative name. So, Grumpy Cat is also the name of "Cat's not happy". That's why.