You can’t sleep either, can you?
Oh I forgot, my sister has you locked in chastity, those night time erections can be painful.
You know what would help? You could lick me to a nice orgasm.
No, not help you, I don’t think you can do anything but tough it out, but me, I always sleep like a baby after I’ve cum.
If you don’t do it, I will tell my sister you’re hitting on me.
You know how jealous she gets!