"Glasses!" Ron declared, as Harry was already eating the pizza but they didn't have firewhiskey yet. He got up and went to the kitchen, coming back with two glasses in hand. "Mum brought you some food too. But if you're not going home right away you can stop by tomorrow sometime. Pick it up."
He shot his friend a look. "I'm really not any messier than you. You just don't make me clean up myself like Hermione does." There, he'd said her name without grinning. That was an accomplishment, seeing as how he really didn't want to make Harry feel awkward.