It takes Sam something like thirty seconds to realize he's being addressed.

It takes him another ten to marshal his thoughts into something resembling coherency so he can take note of the guy, his copious tattoos, and what it is he just said.

"I'm, uh, I'm fine." Aaaand the Oscar does not got to Sam Winchester, because that was definitely the most unconvincing performance of the year. "I'm just - getting my bearings, actually."

Because he for sure looks like someone who's getting his bearings and not someone who's wandering around vaguely.

Because the latter is exactly what he's doing.