"Spaces available" makes it sound like a hotel is overbooked.
How will they handle it, if one too many male-type people get incarcerated?
"Congratulations! We just got our 1801st new prisoner since we warned about only having 1800 spaces left. He gets your cell. You get to go free!"
"Woah! I'll never rob a bank again!"
"Good for you!"
"I'm going into politics, where the real money is!"
"As should we all."