how much cum do you think you would need to be able to take a 15 minute shower with?
showerheads flow about 2.5 gallons per minute so a 15 minute shower is 37.5 gallons
average amount of semen per ejaculation is .5 of a teaspoon and 48 teaspoons in a cup. so that’s 96 ejaculations per cup.
16 cups in a gallon
you’d need about 1,536 ejaculations worth