Truthfully, he couldn't say one way or the other, it had never happened before. No one had ever crawled into his bed and stuck anything in him. Unless it was a finger in his bicep waking him up. Though being woken up with a mouth around his cock wasn't unheard of. This, however, was very different. As they kissed of course he could feel Tony hotdogging his ass, almost on instinct he pressed back a little. Later he'd wonder if it was a bad idea. As predicted he was kind of sore, but not debilitatingly so. Nothing that would stop him at least.

"Then decide quickly." Gladio shot back lazily as he reached behind him to slide a hand along Tony's hip, gripping gently. "Or I can kick you outta bed and finish myself off."