I don't know if English is the only language where some expressions only and solely mean the opposite of what they say but we do have an awful lot of them.
Aaron Allston
The difference between tragedy and comedy: Tragedy is something awful happening to somebody else, while comedy is something awful happening to somebody else.
Adam Garcia
They spend an awful lot of money on I-don't-know-what in Hollywood movies; I certainly didn't get any of it. But they sure do love spending money.
Adam Schlesinger
In the '80s, they were using an awful lot of technology but hadn't really figured out how it worked yet... You had these really great, simple pop songs turned into these gigantic overproductions.
Aeschylus
He who learns must suffer. And even in our sleep pain that cannot forget falls drop by drop upon the heart, and in our own despair, against our will, comes wisdom to us by the awful grace of God.