The sauna's intense heat and the taboo of their situation fuel Derek and Sebastian's desire. Derek's strong jaw works the length of Sebastian's throbbing cock, his mouth stretched wide, drooling saliva as he struggles to take it all. Sebastian, breath ragged, grips Derek's head, fucking his face with urgency. They stand, their hard, sweat-slick bodies pressing together, Sebastian's thick cock nestled between Derek's ass cheeks. He pushes in, filling Derek completely, their groans mingling with the sound of wet, slapping flesh, until they collapse, spent and panting, onto the sauna's wooden bench.