"All women get horny from the author of this rule"

I try to think of anything but the hot women in front of me. The last thing i need is an erection in front of them.

Cassidy exclaims. "Well there is no point in waisting our time in here!" She grabs my hand and pulls me out the door and downstairs towards the pool.

"I'll be right behind you guys!" Melissa says as we go around the corner.

"Just one second, I think I forgot something in the car." I lie, I just need to write something in the book. Once I get to the car I open the book and write. 'All women get midly horny from the author of this rule.' That should make things interesting.

I race back into the house and Cassidy and I walk through the kitchen. I stop dead and the sliding door leading to the outside where the pool is. There was Chloe, my mom. She was lying face down on her stomach wearing a pretty normal looking mint floral bikini. The bottoms are a tad to small for her so they aren't covering as much of her big butt as it should. As well as I can't see them now but I know she has DD breasts that are probably spilling out of the top.

Cassidy gasps. "Oh my God!"

I look at Cassidy's face to see what she is looking at. It takes me a couple of moments but I do notice what she is looking at.

Chloe has her right hand down her bikini bottom, there is no mistaking what she is doing. She is masturbating.

Cassidy turns to me. "Let me guess, you want to fuck her too?" She says jokingly.

I act disgusted. "No of course not. Just cause my mom and sister are attractive doesnt mean I want to fuck them."

Cassidy doesn't look like she believes me. "Sure, whatever you say." Cassidy starts to blush. "I would bang her even if I was her son." Cassidy gets an idea. "You know what you should do?"

"Uh-" I'm cut off even before I can finish a word.

"You should go out there and offer to put sun tan lotion of her. It would be so hot watching you do that." Cassidy bites her bottom lip.

"I don't know about that." I reply.

At that moment we both hear Chloe orgasm, then lick her two fingers clean and go back to sunbathing.

Cassidy turns around the corner sonshe can't be seen and pushes up against the door so I have **** but to open the door and go outside.

Chloe hears the door opening and turns her head to see. "Hey honey! How are you doing?" She says.

I try with all my might not to stare at her big delicious ass, but her legs are spread just enough to see her camel toe. "Good, good. You know, working and hanging out with Cassidy when I'm not catching up on sleep."

Chloe grins from ear to ear. "So you finally fucked her?"

I'm taken back by her straight forwardness. I try to change the subject. "So, would you like me to put some sun tan lotion on you?"

Chloe says cheerily. "That would be great! It's on the table."

I go over to the table and grab the bottle. By the time I turn around Chloe has undid her top and slide her bottoms down about an inch so I can see the top of her ass.

"Start at my neck and work your way down." She says.

I climb up onto the back of her butt, careful not to jam my boner in her ass. I squirt some of the lotion onto my hands then rub my hands together to warm it up a bit. I start rubbing her shoulders and neck.

"Mmmm, just like that sweetie." Chloe moans.

I travel down from the top of her back to the middle. My hands graze the sides of her breasts and I stop, fearful of how she would react.

With her head down intonthe lounger she mumbles. "What happened, why did you stop?"

"Oh sorry." I can't really seem to get out more words than that. I resume with her back, I get to her lower back and I can't help but look at the top of her ass. I 'accidentally' pour some of the lotion directly into her ass crack, the way I see it is the best case scenario is I get to go spread it out myself and the worst case I get to watch her do it.

Chloe softly yells. "Jesus Christ that's cold." She tenses up and clenches her ass cheeks.

I pretend. "Oh my God, I'm so sorry. I'm not sure how I missed my squirting it into my hand."

Chloe unclenches. "It's alright. Accidents happens." She lifts her head up and turns to me. "Something distracting you?"

Shit she knows. "I don't know what you mean." I start to feel my face go red.

Chloe smirks. "Your mind is on Cassidy isn't it?"

"Not this again. I thought we moved past this." You say.

She giggles. "No, you avoided the question." She looks down at my swim shorts and it's then I realize that I'm sporting a giant erection that is trying to drive itself right into her ass. "Now you either have that boner because of me or thinking of Cassidy. No lying mister, which is it?"