.sometimes we are all humping guys at the same time...usually in different rooms...but sometimes we get so excited there is an orgy in the living room... We share everything.Mum said the rest of the street and neighbourhood might not be ready for family inter-generational lesbianism yet...though we suspected there was plenty of brotherly and sisterly and family love out there...it was just hush, hush. We could play that game too. I’m a few months past eighteen and very randy and exploring. However, my dad didn't know I had now grown up and, though I wanted him to be happy, at the moment all I could think about was tonight. Besides, what daddy doesn't know won't hurt him. Dad nodded in agreement before leaving the kitchen and going upstairs to the bathroom. After lounging around the house for an hour, I decided to choose my outfit for tonight. I put some bright red lipstick on (and lots of it), black eye-liner (to bring out my light brown eyes more) and I brushed my long brown. Dave's pointing into the water and can obviously see my cock. I start to speak but a hard backhanded knocks me down under the water. Now I know I'm in trouble. My knees are buckling and as I come up for air I hear Dave splash into the hot tub. I turn to face my attacker, but as I turn another backhand is hitting me, spinning my all the way around again, so my back is to him. Everything is spinning now. I fall forward over the edge of the hot tub. I'm half conscious and can hear Dave muttering. I chuckled and the roommate giggled and Melissa said "What's anal sex?" Of course we laughed a little more but Melissa looked confused and pissed that we were laughing at her."Seriously?" I said."Yes, seriously, what are you talking about?" Well, its when you get fucked in the ass." said her roommate."Oh My God that is so gross." said Melissa"Well it is not horrible, just different." I said."Have you ever done it?" she asked to both of us."Mel, you seriously can not ask me that!" said her.