These are the ones I do eyes closed in a vain attempt not to wake up too much so I can slink back to bed and get back to sleep.
Thing is, if I don't hear my wee hitting the water, I think I'm piddling on the rim or the floor so I open my eyes, redirect Perry so I can then hear my aqua pneumatic drill of a pee hitting the target.
Problem there is, it goes on forever and sounds like Shergar slashing away. This in turn wakes the other half up and i get a bollocking for that