The Queen and Princess lined the twenty lottery winners up, and commanded them to strip. Out came the measuring tape, and they were ordered, very simply, by penis size.
To their disappointment the winner was a skinny pale man with tattoos, but the law was the law, and he did have a very big dick, so that was something.
The 19 others were sealed into their chastity cages and had to watch silently as the new king claimed his prize. They’d be let out in a year’s time when the next lottery was held.