doesn't quite add up(However, he noted that this theory doesn't quite add up as "if that had happened you wouldn't expect it to explode and he’d already drank half the drink so the glass was clearly cold."coasttocoastam.comART Vancouver)
does not hold water(1) This argument just does not hold water. 2) It is a theory that has been argued about for ages, and connections between between Finnish and Japanese have been investigated for ages. None of them hold water. There is no connection between Finnish and Japanese, at least none that we can ever determine using scientific methods. ART Vancouver)
not hold water legally(To a non-lawyer, "Cherry Docs" does not hold water legally. To the two lawyers who accompanied me, it failed the test miserably. Alexander Demidov)