My headcannon on Stiles visiting the Hale house if Hales were alive and Stiles knew about werewolves and Derek was still autistic but less traumatised:
Stiles, after greeting Dereks mom and some siblings, enters the living room and sees a giant Great Dane laying on the couch: OMG! You’ve got a dog! Derek why didn’t you tell me? I love dogs!
Stiles, in the goofiest voice possible: who is the good boy? Who is the gooddest boy? Who is so soft and cute just sitting here, huh? It’s you! You are the gooddest boy! Who is so soft and nice and cuddly? Who wants some butt scratching? Huh? You?
Dog, jumps into Stiles’ lap and offers his belly for scratches: 👁️👅👁️
Derek with straight ass face: Stiles…
Stiles: huh?
Derek: Do you remember when I told you that not all shapeshifters turn into wolves? Some of us shapeshift into other animals?
Stiles: Yeah…
Derek: That’s my dad.
Stiles: ლ(ಠ_ಠ ლ)
Derek: He’s feral rn and forgot that he’s half human
Stiles, looking at Talia, then at his own hand on the dog’s butt:
Stiles: Σ(°ロ°)!!!
Hale family, watching him go pale:
Derek: *eyebrows*
Stiles: I’m so sorry! I didn’t know! I didn’t mean to!
Minutes: pass as Stiles’ heartbeat starts to sound like he’s about to have a heart attack
Talia who finally took pity on him: Derek’s joking, it’s just a dog
Stlies: (;⌣̀_⌣́)
Dereks eyebrows: ^^
Dereks dad dying laughing in the kitchen:


