Why is the ocean so salty?
Because the land never waves back!
Because the land never waves back!
'Salty' in modern slang means bitter or resentful — so the ocean is mad about something. The reason? The land 'never waves back,' which plays on ocean waves (the physical phenomenon) and waving as a social greeting. The ocean is friendless and snubbed, which explains both its salt content and its mood.
Deliver it with mock sympathy for the ocean — it's been waving at the land for millions of years and getting nothing back. That would make anyone salty.
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