I don't have as much control as most of you seem to. If I walk into a place I quickly size up everyone there based, sorry, upon appearances, which is all I have at that moment.
If you look like the average Joe that takes showers and wears clothes that fit, and seem clean-cut by my defintion, then I'm friendly and polite.
If you look like a gangsta rapper wannabe, sorry again, but I just can't fake it. You don't get smiles and friendlies from me. You don't get me talkin' smack, either, for no reason, but ain't gonna be no hellos-how are ya, or sirs or ma'ams.
And I do know that you can look like crud and be just the nicest fella. Not big of me, I guess. Least I'm aware.