Canis has a good point about sizing up opponents. This gets back to the "menace" check of how much of a percieved threat the char is. And as pawsplay mentions, it varies from character type as to what the nature of it would be.
Back to pawsplay, if you envision your half-orc barbarian as played by Don Knotts, then yes, your description makes sense.
I envisioned mine as played Sabretooth. Heck, I even photoshoppped the winter scene picture from the xmen movie. I wasn't literally thinking sabretooth, but I modeled the look on him, and some of the bad-assedy elements of him from the comics. Though a little less evil, since mine wasn't purely a homicidal psychopath.
I think Sabretooth is an intimidating individual. So I expected some elements of that in my PC.