I'd like to change the proper office rule from 'we "do" lunch' to 'we "grab" lunch.' I think this is as popular as it is because it makes you sound more busy, and thus (I guess) more important. I can't possibly finish all this paperwork and call these people back and go to this meeting on time on top of "having" lunch -- guess I'll have to grab lunch.
You ever notice how it's like a competition around this country: who's busiest? Me, no me, no no me! I've noticed the folks that are the fiercest competitors -- the Busiest people -- are usually the ones who aren't busy at all.
I guess they have to waste time somehow.