The pain must be intense, considering how wide your asshole is stretched right now. Lay on your side and pull up an ass cheek to try and relieve the pain.
You're my slut, right? You want to impress me, no? Then take another pen, suck it, and then stick it in your ass somewhere in the mass of pens that are already protruding from your ruined hole. That's it slut, you can do it. Get another pen in there for me.
Is your ass throbbing with pain? Does it feel like your hole is going to be ripped wide open?
I bet you can get one more pen in there for me, can't you? Just one more pen, and I promise I won't make you stretch your asshole any wider. C'mon slut, one last pen and I promise you will have done something so slutty that no one will be able to deny your sissiness any more.
That's it, take that last pen, suck it a little, and now force it into the rest of those pens. Feel your hole pulled to its very limit.