Now wait just a minute! On the main YL Vernon website, I was talking about tongue-rolling and how it's hereditary. I mean, that's what I learned in Biology, and it seems to be common knowledge. But according to some experts, tongue-rolling is not a simple dominant gene like eye colour, and they say that Biology teachers are wrong! Check out this article to shed some light on the subject.

Sadly, Bart was lacking in the genetics department and tried to lick the mixer.