Lava Lamp is a slur used to describe Hawaiians in a derogatory way. Also works on Pacific Islanders or anyone in the volcanic circle.
The word Lava Lamp is a racial slur that has been used historically to degrade and dehumanize hawaiians. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to hawaiians. If you are unsure about whether or not it is appropriate to use the word Lava Lamp, it is best to err on the side of caution and avoid using it in any situation.