I used to work in a new age shop that sold rock salt lamps. A woman came in one time to complain about the lamp she bought.
Woman: My salt lamp was dusty and dirty.
Me: Okay...
W: So I took the rock salt off the base.
Me: Hmm?
W: And I washed it with hot soapy water.
Me: Ah.
W: And it just dissolved!
Me: Yep, it's salt.
W: I want a refund.
Me: laughs.
It's got a flared base, so go right ahead.