Alcohol is a diuretic substance that makes you produce more pee so it will interfere with the function of the antidiuretic lesspee hormone . Bodies are directly influenced by hormones , there ' s no such thing as not feeling a hormone . It ' s either produced and effective , produced but the effect is blocked by something else , or not produced . I guess that as a secondary thing , the nerves seem less sensitive when you ' re drunk so you might not be as aware of the fullness of your bladder . And I think alcohol relaxes some of the muscles , so you might not hold on as tightly . In my experience a person has to be extremely drunk to actually pee themselves , like at the point they are having issues walking , which points to either muscle relaxation or coordination difficulties . It makes sense that they ' d also have less control over their bladder .