The classroom clock ticks away the minutes, echoing the rhythm of Luis' heart as he pleasures himself. His moans fill the empty room, a symphony of desire. He leans back, his body tensing as he inches closer to the edge. His hand works feverishly, slapping against his cock, the sound of skin on skin filling the air. Luis' body shudders, his release painting the desk in ropes of creamy white, a testament to his solo indulgence.