My Crackpot Physics Theory

My crackpot physics theory is that there is no such thing as dark matter and that the effects we see of this nonexistent dark matter are caused by adjacent parallel universes intruding into ours via gravity and the fact that is not a true force like the other three.

Well, dammit, as I was writing this post I was doing some research on gravitons and real physicists have already proposed this idea! How am I supposed to have a crackpot physics theory if real physicists are un-cracking me?!?

Back to the crackpot drawing board, I guess.