It works

The effects of the potion you just drank come gradually. The initial warmth in your gut slowly fills your entire torso. As it grows you begin feeling completely relaxed, as if you had just gotten out of a warm bath.

The first visible difference comes in in your nipples - they get extremely hard and very sensitive. You touch them once and a shiver is sent down your spine. Several minutes later the warmth reaches down to your crotch, where the warm, soothing sensation seems to magnify and eventually grow into a blazing heat that you can't contain. You slowly go from sitting on your feet to pressing your pussy against the cold metal floor to rolling into your back and spreading your legs as wide as they will go. This isn't enough and soon one hand, then the other, dives down to your aching cunt, exploring your folds and teasing your now swollen clit.

You pay no mind to your master as he continues taking meticulous notes of all your actions, your mind increasingly fixated on the ever-growing need between your legs. You pull your knees up to your chest, framing your breasts and pushing them forward slightly. When rubbing your folds doesn't suffice, you poke a finger into your virgin tunnel, making you moan aloud in pleasure. A second finger soon joins it as your other hand pinches your clit. Your hands are quickly soaked with your secretions as you work yourself closer and closer to release. Everything outside of your cage disappears from your consciousness as you focus solely on your pleasure. After several minutes your pussy begins contracting against your fingers and you work both your clit and your hole even harder to push yourself over the edge. When you finally reach it, you lose all control over your body. Your pussy spasms powerfully against your fingers as you spray love juices through the bars of the cage. Your feet fly wildly above you as your hips buck against the air. Your tongue lolls out of your open mouth. Even your rock hard nipples ache, prompting you to pinch and pull on them after your hand is freed from your pussy.

Completely spent from your massive release, you collapse flat on your back, though the limited space in your cage forces your feet to be propped up against the bars. Just like that you fall asleep, desperately needing a recharge after your exhausting masturbation session.