There were nights that Sam relished a chance to put Gadreel on his knees as well. Those were night where there would be no flogger, no pain, but Sam would assert his control for both of their benefit.

He slid his fingers back through Gadreel's hair again. "I want you to go and take a shower for me. Clean up entirely. Then return to our room and get out the cuffs and anything else you might want used tonight." It was never a promise to use them, but it would give Sam an idea where his head was. And the cuffs, in addition to the collar, means Gadreel's powers could be locked away and he would face the night as human as possible. If it's what Sam wants, at least. "Once that's done, I want you nude and kneeling, hands clasped behind your back."