Never pay for what you can 'play' for.

Emma leads the way, the hypnotic sway of her hips making sure you follow her into Hell itself as long as her tight ass and luscious legs are the view. She heads into the store like she owns the place and grabs a cart, filling it with top shelf wine, liquor, and mixers. Your eyes grow wider and wider, and even with your 'security blanket' making you feel warm and safe and oh so sensitive. "Don't worry, Ella. This isn't all for us. Bringing a butt load of booze is an invitation to any party, even Brad's ultra exclusive Sprang Break Ba$h." You don't know how Emma enunciated a dollar sign, but you are so high and horny that anything seems possible. You do wonder why she needs to buy her way into the party. You always thought Emma was Ms. Popularity.

By the time the cart is filled with booze, beers, sodas, and snacks, you have forgotten your initial question of how you are going to pay for all of this, especially considering you aren't twenty one. The ancient ogre behind the counter is bald with an oily octopus-like comb over, widely built with a swarthy barrel chest, and is licking his fat lips with an anticipation that suggests Emma is a regular. He bloats in a bronx accent, "Youse nevah told me youse had a sistah. Does she suck cack as good as youse?"

Emma slides her hand under your skirt and gropes your plump, pantied ass, kicking your molly fueled fuckdrive into 3rd gear. It feels like years since you last spurted, and you are starting to get horny enough to do almost anything for release. You know she is only revving you up to get you to do her dirty work, but it's like knowing how gravity works...it doesn't prevent you from falling once you're pushed over the edge. She chirps back, "Well there's only one way to find out, Mister Sir. Start ringing it up and if we can make you spurt before you're done, we get it all free."

This is a new wrinkle. You aren't used to Emma joining in with your degradation when she can safely snicker from the sidelines. Maybe if she had offered to team up earlier, you wouldn't have spent so many years getting beaten and bullied. Now, watching her ass arched alluringly as she crawls behind the counter, you can't stay mad at her. You meekly follow behind, not exactly sure what you plan to do when you get behind the counter, but not wanting to be seen standing around sissified and slutted up.

Emma has already pulled out the clerk's cock and is stroking and kissing and licking it to life. She motions you over with a coquettish crook of her finger. "Help me SLURP with this MMPH monster and we can both SHLLP party like pornstars. You can pretend it's MMM my SUCK strap on if it SMOOCH helps. Come on, give me a LICK kiss." You aren't sure if your imagination is up to the task of pretending his huge, hairy balls could be attached to your sexy sister, but she is making his dick look pretty delicious with the hungry way she slobbers up his shaft. Maybe it's the molly, maybe it's the fact that you've felt sexier as Ella than you ever did as Elliot, maybe you just aren't quite as straight as you thought you were when you woke up this morning, but Emma's lips extremely kissable wrapped around the creep's cock.

"Okay, but this is our little secret, deal?" Emma barely has time to nod yes, before the tip your tongue tentatively touches the old man's massive member. You are surprised he doesn't taste like cobwebs and cough drops. In fact, if you are being honest, he tastes kind of...dreamy? Decadent? Delicious? You are halfway up his shaft and still the description is on the tip of your tongue as the rest if it wraps around his girth. By the time you reach your sister's luscious lips, you are more focused on the cock than you are on the kiss.

You are still mostly pretty sure you aren't gay. You don't want to date this old dork, you don't want to cuddle with him, and you sure don't want to kiss him, but you can't deny that you want to devour his dick. It's just the nastiest, naughtiest thing you have ever done, and you are sharing the erotic experience with your own sister. That, combined with the **** and deviant dress up games, have you eagerly wrapping your lips around his shaft and sucking and kissing up and down until you can't resist pushing Emma aside and bobbing on his boner until you feel his pubes tickling your nose.

"Holy fuck, Ella! You are a natural born cockslut, sis! Go on, girl, earn that load!" Emma 'compliments' you and coos in your ear as you throatfuck yourself like it's your own cock you are sucking. She slips her hand under your skirt and gropes your ass and slips her slender fingers up your ass and tickles your spurt button. The sheer perversity of your situation pushes you over the edge. You cum so hard you can taste it, every inch of your body boiling over with bliss. You realize that it's not your cum your tasting when you feel the liquor louse's huge hands close around your head and hold it in place as he pounds your face and floods you with cum.

"Fuck fuuuuuuck FUUUUUUCK!" You don't get enough time between tasting his seed in the back of your throat and filling your mouth and then slurping it down to question whether or not you should swallow. The taste is even more ellusively addictive than the taste of his cock, and the thought of being one of the pornsluts that sucks the last drops of cum from a hard cock is too tempting to resist. You are even more confused where that leaves your shaky sexuality than you were before. The best you can come up with is that you are a straight cocksucker that gets off on dressing in your sister's clothes while she plays with your ass.

"Alright, sluts, you earned your party favors. Have fun, and come back soon." You blush brightly as you lick your lips and crawl from under the counter and hurry out of the store with Emma giddily bouncing behind you. You still can't believe how strange this day has been, and you wonder how warped and weird it will get from here.