The mature guard, his uniform tight across his broad chest and thick thighs, can't resist the temptation any longer. He slips into the bathroom, locking the door behind him. His hands tremble as he unbuttons his pants, his heart pounding in his chest. He pulls out his massive, veiny cock, already aching and dripping. He spits into his palm, lubing up the dildo he's been hiding, and presses it against his eager, hairy asshole. With a grunt, he pushes it in, feeling the delicious stretch as he begins to fuck himself. His other hand works his cock, the friction sending shivers down his spine. He pounds himself harder, faster, his breath coming in ragged gasps until he finally comes, his cock pulsing as he fills the room with his scent.