Myth: As far as weight is concerned, you cannot eat too much protein. Anything beyond what your body needs will get excreted in your urine.
It is certainly true that the body has limited ability to store protein. it is also true that the protein of this protein will be excreted in your urine as urea (the nitrogen group that shows up in urine). However, the other portion of the protein (the carbon group) is readily converted to glucose or fat. Ultimately, the protein you consume beyond what your body needs has the same fate as excess carbohydrate or fat. it will be converted into stored fat.