Wrong Word Use

So I was watching a movie last night called "Stick it" about Gymnastics and the pitfalls of the old judging system and taking control of life as an individual. Anyway, there was this girl in the movie who was redheaded actually, but acted like the proverbial blond. There was one point in the movie in which she was trying to dissuade her gymnastics coach from getting on the gymnastics trampoline to show his students that he still had some proficiency in gymnastics. One of her arguments went along these lines: "Sir, it's too dangerous; if you go up there you could have a Cardio Vasectomy!"

My roommates just looked at me as I began to laugh hysterically.