put-on 
noun North American informal
A deception; a hoax.It's hard to tell if it's brilliant or a put-on, or just a brilliant put-on....
- Spade offered them a contrived story about this all being a put-on to make them look foolish.
- ‘Frankly, I still have to believe it's a put-on,’ says Ireland.
- World Trade Center
- World Trade Organization
- world view
- world-viewer
- world war
- worldward
- worldwards
- World War I
- World War II
- world-weariness
- world-weary
- worldwide
- World Wide Fund for Nature
- World Wide Web
- world wisdom
- world-wise
- world without end
- world year
- worm
- worm-burner
- worm cast
- worm casting
- worm-charmer
- worm-charming
- worm compost