"Oh."

Tony had retreated into his hood to make the cushion of Thor's muscle a more comfortable stay, and he was suddenly thankful for that choice.

Was this a test? No, Thor didn't do tests. A joke? He had better taste. So he had to take it as completely sincere, sans the "could still happen" bit. That was clearly tongue in cheek. Right?

"How was the wedding?" Levity was Tony's fallback each and every time.