Sometimes you eat the bear ... and sometimes the bear eats you. Expression describing the bipolar nature of life, the universe and everything, popularised among other places in the movie The Big Lebowski and fifty percent proven, at any rate, by the life of Timothy Treadwell.
Well, dude, sometimes you eat the bear, sometimes the bear eats you. But why d'ya have to use so many cuss words along they way?
An expression used when something is not done properly.
Originally derived from a small child eating a panini sideways (as opposed to starting at the end), and being told that it was not, in fact, the correct way to eat it.
*Person does something wrong / sings out of tune / {insert strange action of your choice}*
A great comeback when someone insults you. On a scientific level this works because the things we eat actually make up our bodies. But if you were called... for example... a pussy... you get the idea.
"You never do anything daring. You're such a pussy"