if it's not one thing it's another|if イディオム
if it's not one thing it's another|if
If a certain thing doesn't go wrong, another most probably will. When John lost his keys and his wallet, and his car wouldn't start, he exclaimed in despair, "If it's not one thing it's another."
Compare: ONE DAMN THING AFTER ANOTHER (ODTAA).if it's not one affair it's another|if
If a assertive affair doesn't go wrong, addition best apparently will. When John absent his keys and his wallet, and his car wouldn't start, he exclaimed in despair, "If it's not one affair it's another."
Compare: ONE DAMN THING AFTER ANOTHER (ODTAA). Dictionary