I knew something crazy was gonna happen because we were on the reproduction section in my Human Anatomy class
The professor was explaining the content of semen and that it has a lot of sodium. And (I say) the stupidest girl in the world raises her hand and asks, "is that why it tastes so salty?"
A hush fell over the lecture hall until somebody yelled out "HA!!!!" then the whole room including the professor couldn't stop laughing.