Of course

Down you went, onto all fours with a wicked blush on your face as you realised a pair or girls from your science class were watching. Embarrassed, you lowered your head as Sarah sat on the bench and put her feet on your back.

You sigh as you hear her pull out her phone and start scrolling. The pings of text messages interspersed with the sounds of short videos form the soundtrack to your humiliation as your classmates wander past with smirks on their faces.

Your wrists and knees begin to tire and so you attempt to shift your weight to ease the strain but a quick smack to your behind, followed by the threat of more humiliation quickly brings you back into line.

You begin to feel the need to pee after an hour of this.

You try at first to wait it out but, now that you've noticed it, the urge to empty your bladder is only getting stronger.