Via Cracked, that strange competitor to Mad Magazine during the 1980s (and now a comedy website/time sink), I learned about the Sami practice of half-castration, where a reindeer’s testicles are crushed to remove its orneriness while leaving it enough male hormones in the form of squished testicles to give the animal plenty of muscle mass and preventing it from becoming decadent and eunuch-like. The traditional practice is to have the reindeer’s testicles crushed personally, that person being a woman using merely her teeth and jaw muscles.
Perhaps a video might help illustrate what I’m talking about. Incidentally, if you watch it with the sound on mute it becomes vaguely pornographic, especially with the final shot of a guy smoking a cigarette.