In the quiet of his room, a lanky, glasses-clad nerd unzips his pants, his cock springing out, already hard. He spits on his hand, lubing up his shaft as he starts to stroke. His other hand reaches behind, feeling his asshole, teasing it with his fingertips. He pushes one in, then two, his breath hitching as he imagines a thick, veiny cock pounding him. His strokes become faster, more urgent, his ass clenching around his fingers. With a final, loud groan, he comes, his asshole pulsing with pleasure.