How about that scene in Red Dawn where the kid shoots his first deer & the others tell him to drink its blood.
“You gotta do it, it’s the spirit of the deer.”
He gulps down a canteen cup full & is congratulated, “You did that, his blood is yours. My Dad said when you do that, there’s gonna be something different about you. Always.”
Oh, deer. Now I have a weird urge to jump a fence and grow some antlers.