How come somtimes your poop floats and sometime it sinks Is it a variance in what you eat or something else?

well it depends if your poo is green it floats but if it is brown it sinks ewwwwwwww but if it is purple or red u need to go to the doctor man oh and if it is green DONT eat it it is not a pickle There are two reasons for it to float: It has entrained gas or it has entrained grease and oil. In the first case, you can blame it on that burrito you ate. In the second case, you need to see a doctor because if oils are making it all the way through your digestive tract you may have a serious problem with your digestive system. If you are eating foods containing Olestra, that is not absorbed and they warn on the bottle that you may experience "anal leakage". That would, presumably, also cause floaters.