White Water: Quickly adds "Ya Wiener!" at the end of various call outs. It's rare enough to really catch you off guard. Instantly adds zest to the game's personality.
"Get the extra ball! (Ya wiener!)"
"Let's go! (Ya wiener!)"
And so on.
Oh, and when you fail the hurry up to save the rafter from the waterfall, the game goes "Dang, lost another one..." I can't help but think Wet Willie is really just a bad rafter guide that he just casually loses rafters all the time, since he says it so lackadaisically.