This is a drawing I did for a friend of mine...I can't remember why. I'm not sure I even knew at the time. I was just asked to draw a snail saying "Wheee" on top of a turtle shell. I really like how it turned out, even though it's just a simple cartoon. I know this idea has been done before - it's even briefly featured in the Arrested Development episode "Afternoon Delight" in which Uncle Oscar possesses a certain brand of cannabis called "Afternoon Deelite" with this on the packaging:
Anyway, I think it's kind of a clever idea, even though I'm clearly not the one who thought of it first.