I remember how grossed out I was when Dr Oz was explaining how meat (beef) basically just rots in your digestive system. Ewwwww! Surely makes burgers wayyyyyyy less appetizing. I can't help thinking about that every time now
Here's a little quote of him explaining what he meant:
Think of every food source as a different vehicle on the highway. Everything travels at different speeds (Get out of the left lane, you good-for-nothing jelly doughnut! Oatmeal is coming through!). Transit time for protein varies (and fat is like a lot of stop signs—they make things go slower). Meat is the slowest to make its way through your body—taking four to seven days to make it to your body's off-ramp and into your bathroom's rest stop. Other less-dense proteins like fish or eggs don't appear to stick around as long. By the way, meat also has lots of calories, so a great way to lose weight is to use less calorie-rich protein sources.
So, it's not two months but it still sounds pretty gross. lol