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I can whistle for a maximum duration of 20-22 seconds.

Created by PseudonymousUser on 2015-04-15; known on 2015-04-16; judged wrong by PseudonymousUser on 2015-04-15.

PseudonymousUser estimated 70% on 2015-04-15
PseudonymousUser said “Another awful estimation. 10 seconds.” on 2015-04-15
PseudonymousUser judged this prediction wrong on 2015-04-15.