A childs parent is both their brother and their father.
This word derives from the combination of two words brother and father. The second meaning of brother which is a male offspring having only one parent in common with another offspring. Dad which means 1. A male parent.
The mother of the offspring is also the mother of the son which makes the male parent both the brother and the father to the offspring. The brother and father (daddy-bro) is the offspring’s half-brother and father.
"My brodad thinks he is so cool that he likes to call himself Daddy-Bro!"