Little Feat, Larry Raspberry, Gross National Productions, Material, Romeo Void
It is a very useful idiom to express a wide variety of situations. It is used to express relief that something has happened at all, after the optimum time; it can be used ironically, suggesting that the speaker is actually quite irritated with whatever or whoever it is that is late, and is thus a pointed comment on the lateness. If it’s used with a sarcastic tone, it could be insulting or rude, and is often used in professional situations such as someone being late for a meeting, in which case it could be particularly hurtful.