You know how people say, "Congratulations!" when something good happens to them of their own merit, like if they get a raise or something? OK, that was a bit convoluted, but you know why people say congratulations. My point is this: I think sometimes congratulations is too laudatory. (Laudatory? Try again.) My point is this: I think sometimes congratulations is too strong a word. (Better, I guess.) So, when someone does something that is sort of deserving of a congratulations, but not really, I like to do this:
Man: Hey, I got a B- on my exam!
Me: Oh. Congratulation!
Man: Um, don't you mean 'Congratulations'?
Me: No, that accomplishment is not worthy of multiple congratulations. You only get one.
Me: Sorry, buddy. Work harder, next time.
Man: Well, bye, I guess.
Me: See ya!