Funny Student

One day a Lecturer was talking about marriage in class...

Lecturer : What kind of wife would you like Smith?

Smith : I would want a wife like the moon...

Lecturer : Wow !! what a choice... do you want her to be cool & calm like the moon?

Smith : No, no...

Lecturer: oh so you want her to be round and white? ??

Smith: No, no...

Lecturer: Oh, so you want her to be fair and beautiful like the moon? ??
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Smith: No, no...I want her to arrive at night and disappear in the morning