<em>"OK, but I'm not having you do it to me and then not letting me do it to you or something. Or running around telling everyone you 'did' me or something without me being able to say the same thing. If we are going to do this, then we are going to do it together. OK?"</em><br/><br/>"Why sis I thought you'd never ask!" Scarlet purred in a silky, sexy voice. Damn, she was way beyond pretending she wanted to do anything other than fuck her sister silly. She was finished dancing around and trying to be silly. She'd wanted this for forever, ever since she'd discovered the joys that her cock held. Her sister's sexy body was now hers for the taking, and no way was she going to go around pretending that this was just some awkward thing they were going to do so they could say they 'did it'! No fucking way, Scarlet wanted this and she was going to get it! She licked her lips again, thinking of how that amazing, thick girlcock would feel between them.<br/><br/><em>"Lean back down on your side."</em><br/><br/>At first Scarlet wasn't exactly sure what Emily was doing. "Uh, sis? How are we supposed to...oh." Oh, that's what she had in mind. "Damn, sideways 69? Naughty idea Em," she giggled, scotching a bit to get into a better position.<br/><br/>When Emily lay down in front of her, Scarlet's eyes grew a little wide. Whoa, her cock seemed a good bit bigger from this angle. Taking in a deep breath from her nose, she bit her lower lip and closed her eyes in anticipation as she breathed in her sister's hot scent. Any moment now...Oh FUCK!!<br/><br/>Scarlet nearly yelled that out loud when she felt hot tongue touch her sensitive cockhead. But she bit it back, only to have it once again nearly explode from her lips when she felt those incredibly hot lips wrap around her shaft. Oh god, she'd fantasized about this so many times! But this was soooo much better it was unbelievable. She could feel herself leaking tons of precum as that hot tongue wrapped around her shaft, and those wet cheeks enveloped the rest.<br/><br/>Well, no way in hell was Emily going to outdo her! Deciding to skip the preliminary lick, she went straight for the shaft. Opening her mouth, she took in about half in one go. Then she tightened her lips and sucked inward, creating a sexy wet vacuum around that hot shaft. She could almost feel her sisters heartbeat in those sexy veins on that sexy cock attatched to her sexy sister. She simply held it there, half of Emily's cock completely encased in her mouth.<br/><br/>The sensation of her own cock in Emily's mouth and Emily's cock in her mouth almost made her brain explode. She didn't know which one to focus on, her own cock or Emily's? She decided to even it out, and simply began to bob her head back and forth. She took in a few inches at a time before sliding back out until only that delicious cockhead remained inside. Back and forth she went, her tongue tingling with the sweet taste of that amazing cock. Her own girl-hood was happily twitching and leaking pre into her sisters mouth.<br/><br/>It was Emily who reminded her to use her tongue, and she quickly began to move it as she sucked. Back and forth, up and around, she used her agile, long tongue to wrap up the cock, to massage it, and to tease it. All the while her mouth took more and more inches, until she finally felt her sister's cock touch the back of her throat. Gagging slightly in surprise, she moaned around Emily's cock, making her whole mouth vibrate.