"Live long and throat fuck," Spock purrs, as he guides Scotty's head, fucking his mouth with increasing intensity. Scotty, his kilt hiked up, grips Spock's ass, taking every inch of that alien cock. The engine room hums with the rhythm of their fuck, as the voyeur, hidden behind a console, strokes his own hard cock, wishing he could join the interstellar throat-fuck fest.