>>13 That's not a function!! Any function f(x) can only have one value for each value of x. A drawing of a penis would double back on itself even if you pointed the penis straight up into the air, due to the shape of the head. At least, my penis is shaped like that, with a very prominent glans which flares out nicely, all the better to please women with. Did I mention I have a lot of sex? In fact I'm going to have sex in about two hours. Enjoy your troll!