Not having to clean toothpaste off the sides of the bathroom wastebasket because he would sit on the toilet and brush his teeth at the same time he did No. 2, using the wastebasket to spit the toothpaste into, and then leaving it sitting in front of the toilet, of course.
And I considered myself lucky because my friend's alcoholic husband kept a bucket in the corner of their bedroom for when he got up at night and had to pee.