While this ain't a really fantastic episode there's some bizarrely cool stuff. It marks the very first appearance of Stan's sister Shelly and of Dr. Mephisto and it is mostly about genetic engineering. Of course during this show an elephant makes love to a pig, of course it sounds pretty bizarre but in order to have an elephant of the size of a pig (Kyle's new pet is an elephant but his mother for obvious reasons won't let him have it) its seems the way to do it instead of the genetic engineering (Chef is of course the one who gives the idea to the kids since, and as that song says, "pig and elephant DNA just won't splice!"). Very memorable and hilarious bits come from Cartman in relation of what he would do if a girl try to beat the s*** out of him (the other issue in this episode deals with Stan suffering the abuse of his own sister) and from Dr. Mephisto and his crazy and dumb as hell genetic experiments (also is quite amusing the clone of Stan and that part with Pip, it's a return to the construction paper for just some moments!). Oh, and boy is the ending hilarious! Mr. Garrison...