Give in

As good as the butt plug feels, you know that your asshole craves more. In any case Alice will be expecting another picture in less than half an hour. "Fuck it!" you let out breathlessly as you give in to your lust and go for the second largest one. As you pick it up, it already feels heavier than the previous one. You hastily lube it up before slowly taking the smaller plug out. Your ass feels empty so you hastily drop the smaller plug and shove the larger one in. You wince as it stretches you wider before moaning loudly as it pops in. "Yes!" you think, this one feels much better. You lie down on your bed and start wiggling your ass in the air to get more stimulation out of the plug. The cage around your cock stops you from pleasuring it ditectly so you just get more and more aroused.

Suddenly your phone vibrates. "It must be Alice again." You tell yourself as you retrieve your phone.

She has simply replied "have fun sissy ;-)" followed by a heart.

"This is getting out of hand." You think as you start loosing control and grinding against the bed in an attempt to get some relief.

You spend the next half hour struggling but failing to relieve your arousal. You find yourself only getting more aroused as time goes by. Once the time comes you snap another picture of your ass and send it to Alice. Before returning to your struggle. You start using the plug to slowly fuck yourself taking it halfway out then pushing it back in making yourself moan in delight. You notice that precum has started to drip from your locked up cock. You remember reading somewhere that it's possible to cum from anal stimulation only. You seriously consider this, given your position. Soon enough the time for sending the third picture arrives, you get back into the right position, take the picture and send it.

At this point you feel that you are ready for the next plug. You take the previous one out hastily and are hit with a feeling of emptiness from your ass as it struggles to close again after spending so much time stretched out by the metal toy. You replace it with the next largest one. This one is around 4.5 cm at it's largest, and you can feel the girth stretch your asshole wide as you push it deep inside. You let out a moan as it fully inserts itself in you. You struggle to stand back up as the plug's size makes moving awkward. A shiver runs through your spine as you think of what the next plug will feel like.

Suddenly there is a knock at your door "Hey John, can I come in?" your sister asks through the door.

"Just a sec!" you reply struggling to hide everything away and put a pair of jeans and a t-shirt on. Once you are ready you open the door to let her in, very conscious of the buttplug still inside you.

"Hey, I was just wondering why you lied to mum earlier" she says looking at you with suspicion.

"Well..." you hesitate "I was drunk and it was late... how did you know?" you reply fearing the worse and trying to act natural.

"I heard you coming home at 4 last night, you sounded drunk".

"Well I was, can you not tell mum?" you plead.

"Don't worry I wont" she answers " see you later then" she says leaving the room.

"See you later" you say back. As soon as she has left the room you gasp at the sensations you had been pushing at the back of your mind. your hand reaches down to the plug, as you strip naked again, and starts twisting it around caressing your prostate and sending jolts of pleasure up your body. You fall to your knees as you keep twisting the plug around faster and faster in an attempt to finally cum.