Grocery store

I head out to the store with Samantha and Sara. I'm a little afraid of spending time with Sam after she caught me so exposed upstairs, but at least this way I can keep an eye on her. We all hop in my car, Samantha sits up front with me after she yells "shotgun".

Sara sits in the back and talks to me, catching each of us up on family news. As the drive and conversation go on, I occasionally glance back over my shoulder at Sara, as I do I keep catching glimpses of Samantha staring at me with a strange expression on her face. I really don't know what to make of it but I hope it doesn't spell trouble for me.

We get to the store and everything proceeds normally, we get our supplies, check out and head back to the car. Right before we get to the car Samantha who is walking beside me lets out a cry and falls into me. I manage to catch her before she falls, and not drop my groceries.

"Are you alright?"

"I don't know, I think I twisted my ankle."

We're close enough to the car that Sara is quickly able to take my keys and get all the groceries into car, while I support Sam's weight and get her to the back of the car.

"Why don't you just put your foot up back here and we'll take a look at that when we get home."

"Actually could you sit back here with me Dan? If you take a look at it and massage it a little I think I might be okay." As she says this she sits in the back seat and proceeds to scoot back across the seat so that her leg is propped up on the seat. Every time she scoots back she brings her good leg up which gives me a view up the skirt she's wearing. I can't see up to her panties, but there is so much of her long thin legs on display that they must be nearly visible, but of course I'm not trying to sneak a peek up my sister-in-law's skirt.

I don't know what I'll be able to do to help, but those legs are hard to turn down and I'm still afraid that she'll say something about seeing me masturbate earlier so I don't want to cross her. "Sure Sam, I'll see what I can do. Sara, you'll have to drive."

"No problem, I hope I don't get lost."

"You'll do fine, I'll help you if you get off course," I say as I slide into the back seat, Samantha raises her legs up so that she can rest her foot on my lap after I'm settled in my seat. As she does this I get a clear view of the end of her panty clad bottom and just the merest hint of panty clad lips between her legs. As she puts her foot back down on my lap, I begin to get the merest hint of an erection. "This could be bad." I think to myself.

I start to massage her ankle trying not sneak peeks up her long legs. "How does that feel?"

"Good, but could you rub the other side of my ankle." Sam turns her ankle laying her foot up the length of my leg, the ball of her foot is now resting the smallest fraction of an inch away from my cock. I can feel the heat of her foot through the fabric of my pants.

"Sure" I take a deep breath and try to will my erection not to grow. Maybe I can get her to move her foot off my lap. "You know I don't think your ankle is swelling at all."

"Really?" Sam brings her other foot up into my lap. "It's not any bigger?" she rocks her feet from side to side giving me a better view of both sides of her ankle. As she rocks to a from her foot presses into my cock and the rocks away and then rocks back. "Are you sure it's not swelling?"

I gulp, "No seems fine."

"Hmm... Weird it feels swollen to me." She takes her good ankle off my lap and back to the floor of the car, doing so makes her skirt ride up enough that I can now clearly see her pink panties up her skirt. She once again lays her foot along my leg now resting the ball of her foot on my hardening cock.

"I made it! We're here!" Sara happily announces from the front seat.

I breathe a sigh of relief and get myself and Sam out of the car.

"Funny. Now my ankle feels fine."

Everyone else is back at the house and now it's time to start dinner.

I could help out in the kitchen with the ladies or grill out back by the pool with Josh.