I'll start with my good friend who is normally very kind, conscientious and understands social etiquette.
She insists on giving me a lift home (I normally walk and never ask for lifts). Suddenly her phone rings while we are driving and she pulls up and parks in a road far away from my home and proceeds to have a 30 minute conversation with a recruiter about a forthcoming interview. All the time I am sitting like a lemon looking at her thinking "should I get out, presumably she knows this is rude and I will be late home" but I stupidly do not because I am too English and bite my tongue and twiddle my fingers waiting for her to get off, thinking she will be finished soon and we will be on our way.
She finishes her call and drops me off with no apologies for the impromptu phone call.