Andy felt like a bad dog when Jack used that voice on him and all he could do was rub his thumb against the back of Jack's hand, convincing himself that this wasn't one of his parent's shouting matches; this was different because this was them.
"First years can do this." he said under his breath, and then Jack asked a really difficult question. "I don't know..." he said, uncomfortable talking about it. "Just... panic. Like a hand around my throat. Like I'm going to fall out of my skin."