1.

In love two melons are. Yet run off and marry they do not. Why?

Because elope, they cannot.

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2.

On a seafood diet, I am. Food I see; eat it I do.

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3.

I sense much fear in six. Fear of seven. Why?

Because nine, seven ate.

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4.

YODA: Knock knock.

LUKE: Who’s there?

YODA: Banana.

LUKE: Banana who?

YODA: Knock knock.

LUKE: Who’s there?

YODA: Banana.

LUKE: Banana who?

YODA: Knock knock.

LUKE: Who’s there?

YODA: Banana.

LUKE: Can we wrap this up?

YODA: Patience you must have. Knock knock.

LUKE: Who’s there?

YODA: Banana.

LUKE: Banana who?

YODA: Knock knock.

LUKE: Who’s there?

YODA: Orange.

LUKE: Orange who?

YODA: Glad, are you not, that banana I did not say, hmmm?

Note: Yoda was also reversing the order of the knocks.

- - -

5.

My wife, take, please!