Seed

Despite his reservations about being a father figure, Harry willingly learns as he goes and winds up making some positive differences in each of the lives he touches. His process is unorthodox and irritates many of the more responsible adults, but ultimately it's a good influence on the kids. All of the other adults have some stereotypical qualities (a lesbian couple includes a tough-talking tomboy and a laid-back free spirit, for instance) that are played for laughs. 

Physical encounters are limited to kissing (both opposite-sex and same-sex), but the concept of sperm donation opens the door for lots of jokes and crassness about sex and reproduction. The show opens with an animated sequence showing sperm trying to force their way into an egg, Harry often refers to the donation process in terms of selling his "stuff," and Billy rejoices in the fact that he's not a "bastard" anymore. Innuendo is popular for laughs, as in comments like, "You blew me off, and not in the good way," and "My womb only accepts incoming." Teen sex is discussed in light terms; in one case, Anastasia says that she's considering sleeping with her boyfriend to keep his attention. Allusions to oral sex, and frequent mention of one-night stands.