Riddle: Two girls, Nancy and Cavanagh, enter a bar together. They each order one cup of iced tea. Nancy drinks her iced tea quickly, and by the time Nancy's drank five of them (I blame the lemon), Cavanagh's only drank one. Five minutes later, as they are walking home, Cavanagh faints. Nancy brings her to the hospital and the doctor claims Cavanagh's dead. They run a test on the iced tea and finds it poisoned. But why did the girl who drank less die?
Answer: The poison was in the ice. Since Cavanagh drank slowly, the ice had melted and she had drunk most of the poison.