A Rebel's Yell: Part 1

A Rebel's Yell: Part 1 by Kalivan

Would you look at that! They've gone a shade of purple already and we're barely getting started. I wonder what colour they'll be when we're done for the day?

Will they be blue? I've heard that slaves balls go blue if they are not allowed to spurt.

Will they be purple? Or a bright red? They seem a little shiny already from that slapping!