> Am I apologizing? Hardly! The full sentence is, "Sorry, did you just actually step on my foot, what the hell?"
At least in the UK, that's not the full sentence, or it could be, but only with a change in tone ('SOrrY?!') - to me it's more like 'Oops my foot was in your way I think, so sorry'. (Said of course before you have a chance to think 'no hang on, I wasn't in the way, you weren't looking, this isn't my fault'.)