Rick and Morty is a great show on Adult Swim and if you haven't seen it yet, I highly recommend it to anyone who likes sardonic scifi...It's right up there with BoJack Horseman in that regard.

It's a great show and there are many fan theories about the more intricate details of their scifi world.
One of the most interesting I've heard is that Morty actually IS Rick...Check out this explanation of the idea if you care more about it:

What do you think about this theory?