Oh, dat's a skull fracture for sure.
— The Scout, Team Fortress 2
What are you doing? That only works in movies.
— Michael Thornton, Alpha Protocol
Don't touch him up, knock him out!
— Eddie, Lock, Stock & Two Smoking Barrels
What is this, an episode of Gilligan's Island? Everybody gets hit once and they are instantly unconscious.
— Dragoon, The Venture Bros.
Well, I hit a lot of guys buddy, but you really take the cake. Tap, you're down!
— Tom Servo as Torgo, "Manos" The Hands of Fate
Blows to the head are potentially harmful and should not be undertaken lightly. Turn around, sir. Remove your helmet, please. Would twenty minutes unconsciousness be okay?
— Igorina, Monstrous Regiment
Cordelia: I came over here to tell Buffy to stop this craziness and found you all unconscious... again. How many times have you been knocked out, anyway? I swear, one of these times, you're gonna wake up in a coma.
Giles: ...Wake up in a- ?! Oh, never mind.
Kakyoin: Geh... Nobody believes me. Time for brute force!
(Kakyoin art shifts into a buff version of himself, which looks like Broly, and tries to kill Mannish Boy.)
(Polnareff tries to knock Kakyoin out with a chop to the back of his neck, but he fails.)
Kakyoin: You're naive, Polnareff! Come back in a 100 years when you're ready to use those skills on me!
(Moe!Star Platinum punches Kakyoin in the face.)
Kakyoin: Uguwah! Nobody believes me... This baby is a stand us...
(Kakyoin passes out.)
"Just bonk him over the head! It's nature's snooze button!"
— Stan Pines, Gravity Falls, "Fight Fighters"
You can lose your heart, but better watch your head!
Those are doctors' orders; that's what they said.
— Pardon My English