Barry's been hauled around like this enough to know what's coming, but he still makes a sharp sound of pleasure when Derek's dick slides in even deeper with the new angle, his thighs trembling as he tries to keep himself upright. But Derek won't let him fall or falter, and after a few moments of simply enjoying being bounced onto Derek's cock, Barry gets his hands on Derek's knees and concentrates.

The vibration starts slow and deep, picking up speed each time Derek's cock drags just right within him. At first it's involuntary, and then Barry finds a smirk despite the blissed out expression on his face, forming a tight, vibrating fist around Derek's cock every time he strikes that perfect place inside of him.