from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A hoax or fraud.
- n. An extraordinarily complicated situation.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A great discovery which turns out to be illusory; a hoax.
- n. A confused or complicated situation; a muddle.
From mare's + nest. Compare horse-nest. (Wiktionary)