As the reviews stated below, the wiener joke just falls flat on its face. There's so much material to make fun of, why make stuff up? As far as I can recall, there was no gay wiener, and very few flaccid straight wiener. And really, compared to the 60 or so boobs and vagina shots... are we really that gayphobic?
Beyond that joke though (which they really kept emphasizing) it was an... OK episode. The garden scene was funny, and so was Kenny as the princess. The president of Sony was humorous as well.
The problem is this looks like one of south parks classic 3 episode arc story lines. But if you don't watch all these together, the middle one really fizzes out, having neither a beginning nor an end.
I'll give this a episode a generous 7 out of ten. Not the worst out of this season but definitely not the best.