Leaning up, Harry whispered into the Potion Master's ear, "Don't be jealous, Severus. Next time I'll let you show me your pyjama's as well." Then he kissed him and vanished through the door. It was not as if the man had been subtle about ogling Harry in his far too tight shirt. Barty had bought it for him last year, and since it was buttery soft and exceedingly comfortable to sleep in, Harry had not thrown it out, even if it was a little on the tight side by now. He had worn oversized closing the majority of his life. The contrast was ... nice; and obviously appreciated.