A family relation in which there are two relationships at the same time - examples would be if a man has a child with two sisters, those kids would be siblings and cousins at the same time. If a man has a child with a mother and her daughter (from another man) those two kids would be siblings and aunt-uncle/niece-nephew at the same time.
What do you mean Timmy is your fusion relative? He's your brother and your uncle at the same time? Dude take that to Jerry Springer.
by IcyHot August 17, 2015