Duckman: Private Dick/Family Man S03E05 - Sperms of Endearment

Bernice, Duckmans sister-in-law, decides she wants to have a child of her own. After trying the dating scene she decides to give artificial insemination a go. Due to a mis-communication and over abundance of, er, 'product', the service gives her Duckmans 'donation'. Hilarity ensues as Duckman and Bernice are incompatible in every [in] conceivable way.