Stay observant! Amestris needs you!
Ed should have remembered this from that month on the island, back when he was a kid: you can only be in the great outdoors so long before you start dreaming of hot showers. And of dumping the people you're travelling with in them.
Hadn't he survived a month on a deserted island when he was ten, equipped only with a little knife and one pair of shorts? He was tough. He was rugged. He could fall asleep anywhere. He could totally do this.
Tomorrow: having to talk to fucking Hohenheim. The day after tomorrow: the apocalypse. No pressure, eh?
Ed tilted his head down, looked up under Greed's bangs — and there, he saw a familiar, shaky grin.