Mommy's Little Sissy: Aerobi-shame
Does Mommy have to spank you?
Because I will. If you can't behave yourself and control your perverted urges, I have no qualms against unbuttoning the crotch of your leotard, peeling down your tights, and laying you across my lap for a bare-bottomed spanking. I don't care who sees.
Is that what you want? Do you want Mommy to have to strip you nude from the waist down, pull you across her legs, and clamp your naughty little wee-wee between her shimmery thighs before slapping your upturned butt-cheeks in front of everyone? How would that make you feel, being surrounded by sweaty, sexy, strong, flexing, bending, exercising women in skintight lycra outfits, all of them stopping what they're doing to watch the spectacle of a slender young girl getting a bare-bottomed spanking from her own Mother in the middle of the gym?
What happens if one of them sees what Mommy's holding snug between her shimmery thighs? What if you do what you always do when Mommy gives you a spanking, and make a big, gooey spurty-spurt all over the floor? Then they'll all know you're not really a girl, but a perverted, shameful little sissyboy who gets so aroused by his own Mother that he cums for her. They might want to take turns spanking you! Maybe they'll make you get up on the treadmill and run with your tights down to your thighs and your little cock bouncing up and down as they spank your poor, burning bottom cheeks!
Oh, now you're *really* making that leotard stretch out. You had better not sissy in your tights!