Temporal Paradoxes

Talk about your favorite temporal paradoxes here!

From a time of war between man and machines, you are sent to the past by your best friend, the leader of the human resistance, to keep the machines from killing his mother, thus allowing him to exist and continue to resist the machines. You have sex with his hot mom and become his father, securing his existance, however when the machine hunting your friend's mother (your baby momma) is destroyed, pieces are left behind. This allows scientists of the past to study and develop the machines that start to rise against humanity. This makes one wonder if it was such a great idea to go back in the first place, because if your friend (or son) would not have existed, the machines would not have to kill his mother or him and would not have been made in the first place.

Butterfly Effect

My future grandson came back and killed me. Now he'll never be born! Oh no!