Sometimes you just need to jump into a pose and snap a picture, because something behind you is too priceless to not share with the rest of the world. Whether it be a boner, animals making love, or an extremely hideous woman.
My dog passed #1 in his class during obedience training, but even after that strict education, he'd never be able to do this. Imagine if you owned this dog. You could get laid 2-3 times a month, just by taking him to raging kegger parties.