sheriff stilinski: you want to date stiles?
derek: yes.
sheriff stilinski: and why should i let you date my son?
derek: because i can’t get him pregnant
A year later Stiles announces he is, as a matter of fact, about to become a father... because Derek is pregnant.
The Sheriff glares at Derek. "When you came to me asking for permission to date my son —"
"Dad! Stop glaring at my baby dada, you'll give him and our baby a complex!"
"Stiles—"
Derek, who is smirking to himself as he watches Stiles defend his and his cub's honor, mutters, "I never lied."
"I heard that!"
"What are you, a cop?"
"I think I just fell in more love with you," Stiles confesses.
(When Eli is born, the Sheriff loves him very much of course, and much to Stiles' chagrin his mate and his father have become buddies by this time to the point of ganging up against him and telling him to "not do this or that" because "that is not safe, Stiles!" and "How dare you! Do you want to leave my favorite son-in-law and my grandson alone?")
someone put this on Ao3 or something like omd
