He is going to have a talk with Sam about the wisdom of taking home strays - might even manage it with a straight face - once he can talk again. For now he just sticks close, and trots along beside Sam all the way home. Good distraction for waiting on word from Betty about Bucky, anyway, and it's still Sam.

Once they're in the apartment he licks Sam's hand, has a look and sniff around, considers vaguely pretending to pee on his sofa but opts not to give Sam ammo to use later.

Then it's a confusing, messy, process that looks like a seizure for about half second and ends with Steve being Steve. "I need a pair of pants."