Is it normal too go pee after every time you eat?

I'm the same as you and a friend of my friend I know is the same and we both are male and skinny, I eat enough but I can't get weight regardless of my will and does not matter if my stomach was full,half full or empty I should visit the John in either cases :) it might and might not be normal but it sucks because sometimes I have to leave my sit in the middle of eating :-/