>>56123566isnt excreting pee from your body creating momentum so you would just be pushed away the Initial Point of Pee (IPoP) and it would effectively be a type of thrust
in the attached graphic you can see the vector (2) which is not drawn to a proportionate magnitude in relation to the thrust created by the pee (1) but is solely enlarged for demonstrative purposes and the IPoP is denoted on the pants of the spaceman