He is the only son of Awh Schitt and Oe Schitt.
Awh Schitt, the fertiliser magnate, married Oe Schitt, the owner of the knee deep Schitt Inn. Jack Schitt married Noe Joak. His wife, Noe Schitt, bore him six children.

Holy Schitt, their first, passed on shortly after birth.

Next came two daughters, Fulla and Giva Schitt. Then another son by the name of Bull Schitt. Deep Schitt, one of the twin boys married Dumb Phuk, a high-school drop out.

Dipp Schitt, married Lota Schitt and they now have a son Chicken Schitt. Fulla Schitt, married one of the Happens twin brothers. The Schitt-Happens children are Dawg Schitt, Byrd Schitt, and Horace Schitt. Bull Schitt, the youngest son, just married a hot little number by the name of Pisa Asse.

Bull and Pisa Schitt are currently awaiting the birth of baby Schitt.

Now you know Jack Schitt !!