i remember doing that thing where I was going through a shop door.. and a guy was leaving. We walked toward each other, he stepped right as I stepped left.. so we were still infront of one another.. then we both stepped the opposite ways and obstructed one another again :p
I said "sorry pal" and smiled... he stared at me like I was some retard so I just looked at him like the scumbag that he was and told him to "F&ck off you miserable old B%stard"
Im a polite person but that particular incident infuriated me!