His eyes open again as the heat of Professor Rammsteiner's mouth leaves his cock. He glowers as well, legs shifting restlessly, but the new sensations of having his balls played with is enough to stop him from protesting.

There's tension building up in the pit of his stomach, and he shifts involuntarily again, thrusting forward as a shudder travels up his back. Professor Rammsteiner's hand is still moving, up and down his cock, the saliva making its progress rapid and smooth - it feels so much better than his own hand, somehow.

When he comes, it's almost a surprise even to himself. He lets out a shaky noise as he hits his climax, sending white drops spattering against Professor Rammsteiner's cheek.