<em>"E-Emily!"</em><br/><br/>The sound of someone calling her by her name made her head snap around to the door. She was speechless and her mouth was open as she looked at her sister. At least it was her sister and not either of her parents. If it had been one of them she'd have surely died on the spot.<br/><br/>Scarlett, at least, was thinking clearly. In a flash she was through the door, closing (and locking) it, and was once more staring at her dumbfounded sister.<br/><br/>Emily, to start, tried to sound indignant. "Well don't go giving me a hard time you cow, you must spend hours in the shower doing this. I'm just......" She was just what? What she<strong>was</strong>just doing was hunting around for her shorts. They were in a bunch by the side of her. She took her hand off her boner and started to sort out from the bunch where the top was so she could pull them back on.<br/><br/>Scarlett was still staring. It was then that Emily saw her sisters enormous erection through her skirt. "See what I mean? You're terrible you are. Stop thinking naughty thoughts and turn around. I'll be all sorted in a moment or two. We will never speak of this again. Never. Kapeesh?"<br/><br/>It was pretty hot though, now she had a second to think about it. She'd fantasized about being caught pretty much exactly like this by someone tons of times before. Now she had been and it was..... Well, it was even more exciting than she'd imagined it to be. She'd thought of being caught by Scarlett before and at least she knew her sister would give her shit for it but wouldn't rat on her to her parents. After all, she probably did it too. Well, there had never been a good time to ask her sister before now, but now perhaps there would never be a better one.<br/><br/>"So you do this too right? I mean it isn't just me. I just imagine that is why you spend hours in the shower all the time. I reckon the only reason you volunteer to clean the bathroom is that you can make sure the plughole isn't blocked up from all your cum!"<br/><br/>She slapped a hand over her mouth. Her cock, still out since she'd not quite yet put her shorts back on, waggled as she stood naked from the bottom down. She went really red now.<br/><br/>"I'm sorry. That was too far. I didn't mean to be so mean sis. Friends?"<br/><br/>Ordinarily she'd take two steps and hug her sister. Seeing as her cock was out, that probably wasn't the best idea right now.<br/><br/>She leant down to pull her shorts back up. "Friends?" she said as she pulled the thin cotton shorts up. They covered her modesty up, but didn't do much for the tenting. Scarlett wasn't much better though.