Blackmailing Step-Dad's Big Black Cock

Story - I was at home getting ready for a girl's night out when I overheard my mom's boyfriend talking to his friend in the phone; basically revealing that last weekend he wasn't in Chicago on a business trip but hanging out with his friends in Vegas with a bunch of booze and hookers. If I tell this to my mom she will freak out and break up with him. Which doesn't bother me much but I'm sure he doesn't want that. I thought I can totally leverage this info and use it for my needs. So I went to the mailbox to retrieve the credit card statements to have them as proof. Then I walked up to his room and asked him if I can take his Bentley out tonight to go out with the girls. Of course he straight refused until I told him I overheard his phone conversation and if he wants me to keep my mouth shut, he better comply. I also told him I have the credit card statements as proof in case he wants to play hardball. He said fine I can take the car if I can keep my mouth shut. Since that was so easy, I thought I might take it one step further. I know it's totally inappropriate but ever since my mom introduced him, I've had the hots for him. Judging by his bulge, he must have a big black cock which I always wanted to try out. So before I walked out, I turned back and I told him that in addition to the car I'd like to have fun with him. First he refused, but as I approached him with my cleavage that showed off my big boobs, he loosened up. I knelt in front of him and pulled out his big black cock. Oh yeah! Here we go! I'm finally holding my mom's boyfriend's big black cock in my hands. I started jerking it and when I couldn't resist anymore I put it in my mouth. After sucking it, I just kept pushing it down my throat. That hard big black cock made me choke and gag. I gave him a very messy and slobbery blowjob. Then I took out my huge boobs and placed his BBC between them. Since it was very juicy from the gagging and choking, it slid nicely up and down between my huge boobs as he was titty-fucking me. Then he took me over to the bed and made me ride that big black cock. My big tits were bouncing up and down while he was pounding my slutty pussy. He turned me over and slapped my big ass while pounding me with his big hard black cock and then watched my juicy pussy and fat ass bouncing up and down. Then he fucked me on my back while my feet and soles were up in his face. After pounding my juicy pussy from behind, I let him titty-fuck me again so he can bust his sticky creamy load all over my big tits. Cum on tits looks so slutty. I think his big black cock is the first of many to come for my pussy!