"If you thought that lift on an airplane wing was created by the top of the wing, then you ought to re-consider. A man from the Greeley airport was flying his Citabria this week, and he heard a "pop". He flew back to the airport, in a normal fashion, and landed. He didn't know anything was amiss until he got out and looked at the wing."
This was sent to me from a friend who lives in Greeley CO.