Guest post by "Being Useful" I don't know about that theory.
As finding nemo has taught us, your theory about smooching being more important than the butt is probably incorrect.
http://media-cache-ec0.pinimg.com/736x/f6/62/a1/f662a1a17ad3123ea26bc3f87b4ea44e.jpg
http://blogdailyherald.com/wp-content/uploads/2013/02/touched-the-butt-gif.gif