When, seconds after finishing a shower, a big dirty poop begins slamming around in your intestines. After jettisoning the egregious turd and wiping, you still feel unclean, so you are forced to return to the shower and soap up the inside of your butt crack again, after having just done so minutes earlier.
Guy 1: Hey man, why'd you take two showers? You're running up the water bill!
1 - A delicious dish, made using a summer sausage, peppers, onions, and rice; covered in a base made from vinegar and parsley flakes. (Salt and pepper to taste.)
2 - When someone hasn't washed their ass in a few days, and it smells like straight vinegar, and has little green flakes on their taint.