I am your hot caring bratty stepsister that locked you in chastity because small cocks don't deserve pussy. Locking you in chastity I am saving you from all the embarrassment pursuing pussy. I get me in my room and demand that you drop your pants so i can see my cute little locked cock. I laugh and giggle at how small it is and how cute it is in the cage but it looks like there is still some room in the cage and needs to be smaller. Luckily i have a smaller cage that i lock on. I have a date tonight with a big black cock and want to look my best and I might as well have some fun teasing your small cock and see if the new cage is small enough. I go ahead with a little lingerie fashion show with some different lingerie outfits. I tease the entire time about how a big black cock is going to fuck my pussy and ass while your cock will stay pathetic and painfully caged. I settle on heels, stockings, thong, bra and a dress. As i leave i pull off my panties and leave them for you. I won't need them on my date as my pussy has already soaked them thinking about a real cock anyways. I come home happy and start going off about how huge his black cock was it stretched me out so good. I was on my knees begging him to suck it. Something you won't experience. I ask if you are happy that your caring stepsister taught you how to fuck your ass. I know you are because it is the only sex you get and i can hear you moaning all the time in your room. Trying to get some relief because you are constantly horny because of the cage. I explain the good news that an even smaller cage is going to make your cock more limp and useless. I want to watch how good you have gotten at anal sex, as that is the only sex little cocks get, and I demand that you start using the big black dildo in front of me. I tease how nice black cocks look, there is no lube so i say you will have to beg to suck and lube it up just like i did with the real one. It's all lubed up and you start slowly fucking the dildo  I join in with my own in a show of support fucking my own ass bouncing on my dildo. I love how cute the smaller cage looks. I love how it flops around limp, pathetic and useless as you ride the dildo along with me. Just a little while ago a real man with a real cock was fucking my ass just like the dildo is fucking mine. Big cocks get to fuck and small cocks get cucked and fucked.  I keep coaching, teasing and humiliating you as you ride the dildo with me to orgasm. We cum together and once done i remind you how good cum tasted from the first time and demand you clean up and eat your cum mess.