butter and egg
n.— «This attractive farm house…is not a “butter and egg” business. Inside was discovered the most elaborate gambling establishment ever raided in Licking county.» —“Gambling Den Found In County” Newark Advocate (Ohio) June 10, 1947. (source: Double-Tongued Dictionary)
Further reading
What kind of book do people ask for most often in prison? Romance novels? No. The Bible? No. The most requested books by far are … dictionaries! A number of volunteer organizations gather and distribute used dictionaries to help inmates with...
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...