Posted: 20.09.2007 at 20.13
Ok, here's one.
In an Greek history class, the teacher was telling us about Alexander the Great, and how he had to murder his late father's newest wife, because she was bearing his yet unborn sibling, who might take away the power from him. An apalled female student blurts out : but that's horrible! Why did the kings had so many children back then, when they knew they would slaughter each others!
Another student answers her by shouting : d'huh, because they didn't have condoms, stupid!
Right.
(no, seriously, they had birth control methods back then)