Read this passage from The Phantom Tollbooth. "My, my, my, my, my, welcome, welcome, welcome, welcome to the land of Expectations, to the land of Expectations, to the land of Expectations. We don't get many travelers these days; we certainly don't get many travelers these days. Now what can I do for you? I'm the Whether Man."

"Is this the right road for Dictionopolis?" asked Milo, a little bowled over by the effusive greeting.

Which phrase from the passage is an idiom?

"welcome, welcome"
"land of Expectations"
"the Whether Man"
"bowled over"