Misc: Which bird turns its head upside down to eat?

Questions

What was the theme name of Expo 67, The Montreal World’s Fair of 1967?

What comedian is known as ‘the Imelda Marcos of White Nikes’?

The name Jeep is a derivative of the expression ‘G.P.’ What doe G.P. mean in military slang?

The moaning sound of which animal was used as the sound of the Tornado in the film ‘Twister?

Which actor’s life was based on the Neil Simon movie ‘ The Goodbye Girl’?