Chapter 405 EP25:Little Sister Big Butt

The graduation ceremony itself, beside being the fairly boring rite of passage that it naturally was, also marked the apex of the siblings' day of suppressed desires and surreptitious pleasures. In the middle of the valedictorian's speech, while they stood side by side on stage among their classmates in front of an auditorium crowded with parents and relatives, Michelle lightly elbowed Tyler, just enough to call his attention and have him lean closer to her. As his sister whispered into his ear in a giggly tone that she had just rubbed one off right there with her hand hidden underneath her graduation gown, Tyler let out a grudging sigh and stared straight ahead, his jaw tightening and his imprisoned horsecock rearing to burst out of his pants. Only meeting the proud yet moved gaze of their beaming mother managed to distract Tyler from the insane surge of arousal boiling up inside him, while Michelle's soft chuckles by his side reminded him that at least she was having some fun. Eventually, after they received their diplomas, after the collective cheering and friendly hugging and random chatting, after a few uncharacteristic tears shining in Ellie's eyes as she squeezed them tight to her voluptuous, elegantly dressed frame, after driving back home to spend some more time with their mom before they had to leave for their graduation party, finally Michelle and Tyler were given a chance to let their mutual passion run free. Not trusting themselves to actually manage to keep silent while sneaking an anal quickie even after Ellie retreated into her home office to make some calls and catch up with work stuff, the siblings chose to get changed as fast as possible, rush outside into the balmy evening, jump in the car and drive off. Rather than head straight to Gabby's party though, Tyler made a strategic detour to a quiet side road just out of town, so that he and Michelle could have some much needed privacy.