He is still lost in his own head, coasting on those waves of sensation when he feels the vibrators inside him shift up, hitting all the most responsive spots. With the blindfold in place, he can't see what's coming, but he feels the press of the third vibrator pressing against him and a stab of doubt hits him. It doesn't seem possible... certainly not pleasurable.

The momentary doubt doesn't last. Dean's got the chain binding him in his hand, he can free himself if he needs to. He can still say 'stop'. Pain isn't something he seeks in sex, and he's pretty sure this will hurt, but it's far from the worst pain he's ever felt. And there's something almost... rewarding... about pain with a purpose. Instinctively, he knows this isn't being done solely to hurt him. It makes him curious to see what will come after.

He takes a deep, calming breath as he's instructed and settles, willing his body to relax into the new intrusion.