black holes

So last night relaxing with my wife getting ready to fall asleep, we were watching Cosmos.  While watching they start to explain black holes and how they effect Space-time. I had this thought that I thought would be interesting.  What if black hole are actually tunnels to different parts of the universe.  What if the intense gravity from the black holes actually pulls through a type of tunnel where on the other side is all of this mass being pushed out.  That being said what if black holes are one way tunnels and in order to traverse the universe you would have to map where black holes come out.