Sam squeezed his sister's hand tight, lovingly, affectionately, this was a moment that just felt so right in some ways and so very wrong in many others but, most importantly it was what Clarissa wanted. He felt the thick mushroom tip of Johnny's cock - so much bigger than his own that feelings of jealousy and inadequacy mixed together in ways they often did around big dicks, but also in ways that were unique to Johnny. He still remembered being pinned to the lockers and feeling this thing pressing up against him when they were younger, and if anything it seemed even bigger now.<br/><br/>His lips parted more to allow his tongue and Clarissa's to wrap around the cock head as they reached for each other's plumped up, painted lips. He saw Clarissa glancing up and it made him feel warm and fuzzy inside. They'd talked about looking up while giving blowjobs and how much guys liked it. He saw sure there was no prettier sight for a 'real' guy than Clarissa looking up at them with her lips on his cock. He knew from experience how beautiful that was after all! It made him melt for sure.<br/><br/>And then, just at the moment the car pulled to a stop.<br/><br/>The driver didn't say anything, Sam tipped so much and was such a good customer he was going to let them do whatever they were doing in the back where he couldn't see. But Sam realized it was an excuse to break this off. He paused and smiled at them as they stared at each other, "I'll um, stall the driver" he kissed at Johnny's cock a little, "or um we can go in, or uh, whatever." He giggled, like a good little dumb fun-loving slut.