<em>"Good girl," </em><br/><br/>Emily beamed with pride. Her mother loved her and was proud of what she'd done. With barely a squeak she was lifted up off her mother's lap and plonked back down on the bed. Now what?<br/><br/>It was barely a couple of seconds later when she began to find out what was next. Katherine was so far fully dressed and the girls were bare from the waist down. That hardly seemed fair and Emily knew that Katherine was highly aroused. She may well have a bruise on her waist from her mother's boner.<br/><br/>The skirt came up very slowly. Emily watched her mother intently as the skirt rose and rose. She risked a glance at Scarlet and she seemed equally rapt. Someone - conceivably it was even herself - let out a sigh as the straining panties came into view. Her mother wore quite the fancy kind of underwear. The sisters had joked amongst themselves about it many time while sorting the laundry out as part of their chores. Frilly and sexy knickers if you were a mother seemed quite the extravagance. Now, it made perfect sense. As Katherine hooked her fingers around the waistband and pulled them down, this time Emily was sure it was here that was doing the sighing. She opened her mouth and let her tongue rest on her lower lip longingly as she saw the pearl of pre-cum on the end of her mothers monster cock.<br/><br/><em>"Now let's see you two girls put those sweet lips of yours to good use,"</em>Emily looked at her mother as she was patted gently on the head by her. Under normal circumstances she would rebel at such treatment. Now, she had far more important things on her mind. The most immediate question was, who was going to do what? She looked down at Scarlet still on the floor and her sister - ever the one to just dive in to a situation and see how it unfolded - did just that again and seemingly swallowed one of her mothers testicles in her mouth. Emily nearly blew a whole new load at the sight. Nearly....<br/><br/>Scarlet was on balls and base. That left Emily with the shaft and tip. She couldn't help feeling that she'd got the much better deal than Scarlet had but then maybe they's swap and Scarlet would get a turn too. Katherine's eyebrow was beginning to arch up now and Emily could see it presaged a remark about how slow she was being. Before her mother had a chance to voice her complaint, however, she pretty much copied Scarlet's enthusiasm and slid the entire head and first few inches of the engorged cock into her mouth. Her tongue slithered around the cock-head and she curled it as it flicked over the slit to suck up the pre-cum. See, if Scarlet hadn't done that to her a little while before, she wouldn't have known what to do. As she'd done with Scarlet, Emily didn't try to swallow too much shaft but instead made her thumb and forefinger into an 'O' as she started to jerk off the shaft about half way up it. With Scarlet, Emily's thumb and finger could touch. With her mother there was no chance of that.<br/><br/>Two more sucks, several more jerks, and Emily pulled herself off her mother's cock with a loud 'pop'. "Scar can swallow a lot more cock than I can. If you want her to do that to you she's way better than me!" Her eyes suddenly opened wide with shock. She realized how that could sound. "Um.... my cock..." she added, "not other people's."<br/><br/>Fuck! that was just a bad - if not worse. She gave her mother a nervous grin and then went right back to sucking on her. That, at least, meant she couldn't speak any more and dig herself - and her sister - into any more holes.<br/>