That comment was a silly joke. Last year, in a desperate effort to understand why John Milnor's famous theorem about exotic spheres wasn't trivially false, I asked a related question on Mathoverflow. This year, I had no need of that device. However, even if I had
needed it, I wouldn't have dared to use it, so the "clue" that I hadn't asked any questions recently was in fact not a clue at all.