Potter would be breathless, panting with need and nervousness. He’d tell Snape that he admired and respected him, thank him for his contributions to the war, say they could never have won without him, and Snape would remain poised and composed. Potter would strip slowly, clumsily, unwittingly putting on a show. Snape would stifle his reaction to the body he knew would be nothing short of delectable as long as possible to keep him on edge. When he couldn’t hold himself back any longer, he’d reach for the imp and show him what he’d been missing.
What a perfect take on Snape's fantasy about how Harry would approach him at long last!
And Snape's response to Harry standing there, finding him looking small and defeated and adorable was hilarious.