sea kitten
n.— «People For The Ethical Treatment of Animals—believes calling fish sea kittens will make sea food less appealing.» —“PETA’s latest idiotic demand” Courier Mail (Brisbane, Queensland, Australia) Jan. 9, 2009. (source: Double-Tongued Dictionary)
Further reading
If someone’s got melon, it means they’re smart. The expression most likely arose because of the resemblance between a melon and a human head. Several other foods are associated with having brains, including a cabbage, a gourd, and even a...