memes are funny when they're sudden or ironic. that's the quality of a good meme, irony and slapstick humor.
lately, or actually, ever since 2014 memes have transitioned into something that parallels this differently, mainly toilet humor and unstructured rehashed jokes. i think it's because meme's have reached people who have no idea what the internet really is. they see it as a way to transition, but it's the wrong transition.
e.g anyone who has ever used "succ". That is not a meme, it's a stuff.