Moms Christmas party

My mom had her Christmas party last night. I showed up around 10 and the party was in full swing. My niece was there. She came up to me and hugged me and said grandma was drunk and dancing. I looked over at her and told my niece to follow me. I took her into the laundry room and closed the door all the way but for a crack so we could watch. When it got late and most of the people left me and my niece watched as the guys started to strip my mom down. My niece was in front of me so we both could watch as my mom got on her knees and started to give blowjobs to anyone who wanted one. I started to get a hard on so I pulled my pants down and my niece reached around and started to jerk me off. We watched as my mom was being Fuck. I pulled my nieces pants down. I started to fuck her from behind when the laundry room door opened up. One of the men saw her and came over and stuck his cock in her face and like a champ she swallowed his cock.
The other guys saw what was going on and pulled her out into the room. My niece saw one of her moms friend sitting on the couch and went over and got on her knees and unzipped his pants and pulled his cock out and started to suck him off. Meanwhile there was about 6 guys on my mom and the rest went to my niece. I was watching both of them get gang banged when my mom saw my niece and got excited and got up and grabbed me and sat me down on the couch next to where my niece was getting tagged team my mom started to suck me while one her friends mounted her. I looked over at my niece as she swallowed her first load of the night.
Couple of the guys picked up my niece and put her on the coffee table her head was hanging over the table. I watched as one of the guys got down on his knees and started to face fuck my niece. my mom looked at her and then back at me. Before she could say anything a bunch of guys dragged her and my niece and took the into the bedroom and threw them on the bed. My mom asked my niece if she ever went down on a woman. My niece looked up at her and said only once grandma. one of the guys yelled well this is your second time and pushed her head down on my mom. We all watched as they looked turns going down on each other. when they were 69 my mom friends took turns fucking them until everyone came.
After everyone left I took them upstairs and got them in bed. I got in bed with them and went to bed. I woke up to my mom stoking me while my niece was giving me head. I came on her face and my mom started to kiss my niece and wiping the cum all over her.