five-head
n.— «One American friend of mine has a very large forhead and he used to crack jokes like that: “I don’t have a forehead, I’ve got a five-head!”» —“Forehead” by Sergei Buhtoyarov Usenet: fido7.ru.english May 30, 1997. (source: Double-Tongued Dictionary)
Further reading
The adjective corny describes someone or something “unsophisticated” or “naive.” This sense of corny goes back at least as far as the 1920s. Seed catalogs of the time often contained bits of goofy jokes and broad humor...
The adjectives canine and feline refer to dogs and cats. But how does English address other groups of animals? Plus, cabin fever has been around much longer than the current pandemic. That restless, antsy, stir-crazy feeling goes back to the days...