"You're warm," came a mumbled explanation. Which, unfortunately, was all the explanation that happened to be forthcoming as Sam dozed off on his shoulder, maybe snoring a little.

This lasted all of five minutes before Sam woke again, this time blinking at Tony, then darting a quick glance down under the covers to make sure they were both fully dressed. Not that he cared if Tony saw him naked - it wasn't exactly the first time, and Sam was pretty casual about nudity anyway - but he wanted to know just how he'd ended up here.

...apparently it hadn't involved sex.

"Well, that's weird."