Leaning back against the cool wall, he spreads his legs wide, his hand working his thick, black cock with expert precision. His eyes roll back, his mouth open in a silent 'O' as he feels the familiar tingle in his balls. He pumps faster, his grip tightening, until with a shudder, he comes, his cum spilling over his fist, dripping down to the floor. He looks down at the mess, a smirk playing at the corners of his mouth, before wiping his hand on his discarded shirt and standing up, his cock still half-hard, ready for more.