Erin needs some fresh air

Erin bounced over and said, "I need some fresh air. Let's go!"

John headed to the car and jumped in. As he put the car in gear, she touched his hand and said, "Can we get some **** for me? I could really use a screwdriver!"

Though she's under 21, John grinned at her and said while he drove off, "Sure. They usually have orange juice at the liquor store." As he drove, he was able to sneak peeks at Erin's body. Her pink tank top was bulging with her large tits and the bumps of her nipples were prominent. Her short shorts were so short, her mile-long legs were fully displayed. The way John's sister-in-law was sitting, the crotch of her shorts was stretched tight, and he could easily see her cameltoe. His mind was spinning and he struggled to keep from springing a woody over his wife's barely-legal sister.

They arrived at the liquor store, got a cart and picked out beer, a few bottles of wine, a bottle of Vodka, a bottle of whiskey, soda, and some orange juice. Erin followed John around, hanging on his arm like a girlfriend. When he picked out the vodka, she kissed his cheek - her lips lingering for just a couple seconds longer than what was proper. She whispered, "Thanks, John. I'll make it up to you." John's cock hardened instantly.

After checking out, they got back in the car. Erin pulls the bottle of vodka out while still in the parking lot, twists the cap, and chugs a good half cup. John just looked at her surprised. Wiping her chin, she said, "I was thirsty!"

Within a minute, she's noticeably tipsy. She slurs, "Thank you sho mush, John. I'd l-like to make it up ta ya now."

John gasped when she grabbed his bulging pants. "Erin!" He'd had dreams like this many times, but having it happen in real life was still a shock. Not that he didn't want the attention.

She looked up at him sexily and cooed, "Now I'm hungry!" While he drove, she unzipped his fly and pulled out his cock. John quickly found a deserted company parking lot to park.

Before he had time to put the transmission in Park, Erin had his cock in her mouth, bobbing rapidly. Her lips and tongue were divine. John groaned, holding her hair away from her face. Erin was an expert and fellatio, and she knew it. She kept him excited, but not close to coming for several minutes. Popping his cock out of her mouth, she looked up and said, "I've wanted to do that since the day Taylor brought you home to meet Mama."

John ran a hand under her tank top, and squeezed her firm breast, and pinched her nipple. "I've wanted to do that and more since that same day," he replied.

"Well, get over here and do some more," she said, sitting up, scooting to the car door, and patting the seat. John shifted over the space between the seats, grinning like a very lucky man. As he slid onto the passenger car seat, Erin moved so she was over him. She worked the lever and put the back of the chair almost flat. Kneeling on either side of his knees, she pulled his pants and boxers down, and his cock sprang straight up. Whipping her tank top off, unleashing her mammoth boobs.

"That's what I'm talking about!" she said, grasping his tool as she straddled his hips and placed his shaft in the slick groove of her sex. Her breasts hung over him, and he reached up and grabbed them, squeezing hard. They were magnificent teen boobs, large and very perky, with scrumptious fat nipples. As he fondled her assets, Erin shifted to get her tits closer to his face. Her pussy glided up his cock, and he flexed his muscles down there, making his mushroom head slip into his sister-in-law's slit. Then he squished her breasts together and placed both nipples in his mouth to suck.

"Oh, my God," she squealed as she dropped down on his cock, impaling herself on his thick flagpole. Her nubile cunt was very tight, but also very slick with her excitement. John groaned into her mams, buzzing a bit on her nipples. "Oh, your cock feels so good in me. Taylor is so fucking lucky!" Erin bobbed up and down on him slowly, shifting her body so he hit just the right spot in her cunt.

He kept sucking those nipples, then flicking his tongue on just the tips. Erin moaned from his double stimulation of her body. Speeding up her bouncing, John's balls began tightening - ready to deliver their dangerous cargo.

"Oh, yeah! Oh, yeah! Shit! I'm gonna come!" Erin screamed as her body stiffened in climax. Her pussy was pounding his cock with powerful squeezes, and he couldn't hold back, exploding in a shower of cum inside her nubile body. The addition of jizz seems to make Erin's orgasm bigger, and she threw her head back in ecstasy. Her bouncing boobs mesmerized his brain through his own climax.

John's wife's sister slumped on top of him, huffing and puffing like the Big Bad Wolf.

"That's what I'm talking about. Thank you, John." Erin pulled herself off his johnson and knelt in the foot well of the front seat. She dipped her head down and cleaned off his cock, before tucking it back in his pants. John climbed back over the gap between the seats as she sat down, and they drove back to the party.