"Aren't we already going to be that Spider kid's adoptive parents? I'm not taking on Thor, too."

After a second to think, he pushes up on his elbow and leans across the no man's land between them. "Go to sleep. Tomorrow you're taking me back to a planet that has my clothes and take-out that won't get us high."

The part that had taken thinking about is leaning in to kiss Tony goodnight. What they're doing is almost certainly a terrible idea, but neither of them halfass anything, not even their terrible ideas.