How to be an ignoramus.

I found a great way to get people to recoil with horrified, condescending disgust at me. You can try it too if you'd like. Next time you see a parent, minding his/her own business, walking along with their visibly Down syndrome-affected kid just walk up to them and say, "Hey, I got just three words for you: Amnio-Cen-Tesis!"