The squirming and kicking has Sixshot panting a low laugh against Tarn's valve, readjusting his grip on the mech. He can feel the way the slick mesh clenches around his tongue and mmm...

Drawing back slightly, he frees up one of his hands and slips it between Tarn's legs, sliding two wet fingers into the tight heat there, knuckle deep in one smooth push. His now unoccupied mouth finds the node again and the Sixer licks and sucks as he sets up a hard and harsh little rhythm of thrusts.