I agree. I was watching a rerun yesterday where Daphne was berating the father for "having a wide dump".
After she left he looked at Frasier and said, "What was that about? The sands of time don't flow up the hourglas, you know?".
Lines like that were genius in their metaphor.
Each time I see a rerun I find comedic gems I missed the time before. Where did those writers go....?