One day I'm sitting in my room just chilling watching random YouTube videos, when my sister comes in my room and asks if I'll give her my opinion on some clothes so with no thought I said sure, when she comes back she has a bag of clothes and pulls out an outfit says she'll be right back.. so I wait.. I wasn't looking at first until she said my name and to look she's wearing a see through robe with nothing on but panties underneath and my dick shot up like a rocket, when she seen my pants just she laughed and said it's okay no one else is home walked over and got on her knees I asked if it was okay she said yes then I pulled my dick out and she took it all the way back in her throat I never felt that before and just started fucking her throat till she choked, then she bent over the bed with her ass spread and pussy soaked, I slide my dick in and went to pound town, then she tells me not to cum inside she can get pregnant, soon as she said that i pulled out and busted on her back she was so happy and proud she sucked me clean and we have secretly fucked since