CrashBang said:
"The Lord works in mysterious ways" is a massive copout. If christians can't explain something then they just fall back on that
This.
Or when someone thanks God for something that was done by a person. For example, the episode of Scrubs where Doctor Cox's sister prays with a family then the medicine finally starts working. Cox asks her to admit that medicine made the man better, she agrees then adds "Thank god for creating medicine." because you know, the hard work of people isn't really theirs, it's gods.
I've had people say that about a few things and it just annoys the hell outta me.