When did you laugh?

[Mhoram]

"Good morning!" said Bilbo, and he meant it. The sun was shining, and the grass was very green. But Gandalf looked at him from under long busy eyebrows that stuck out futher than the brim of his shady hat.
"What do you mean?" he said. "Do you wish me a good morning, or mean that it is a good morning weather I want it or not; or that you feel good this morning; or that it is a morning to be good on?"
"All of them at once." said Bilbo.