I return home after running a few short errands, upon walking into my room I find my brother in there with his pants around his ankles, his cock out, and a few pairs of my dirty panties in his hands! I call him out on being such a creepy brother, I've seen him around the house checking me out, looking down my shirt...but I didn't realize his pervertedness was on the level it is! I can't help but notice that my bro has a massive cock...I can't help but stare at it. He seemed to be uncomfortable at first...and I pointed out the hypocrisy, it's okay for him to jerk off to my panties but not okay for me to be impressed by his dick? I don't think so. I explain that my boyfriend hasn't been very good in bed recently, the lack of sexual satisfaction has been getting to me and upon seeing my brother's big, hard cock....I can't help but get super turned on. I take my tits out and tell him to keep stroking for me. Then I get down on my knees and wrap my lips around his cock. "Do you like how your sister's tongue feels sliding up and down your cock?" After I suck him off for a while I lay back and tell him to put his dick inside of me. He pounds me so hard, making my big tits bounce up and down...I can't help but moan and dirty talk to him. I have him keep fucking me until I cum all over his cock and then I tell him to put a big load deep inside my pussy. Hopefully instead of jerking off to my panties, he will just sneak in my room at night and fuck me.