[Note: This is a copy of a post I made in “Post your favorite quote(s)“ I think this is the Topic it belongs to, I just saw that one first.]
She: "Can you do that again?"
Me: "I sure can!",
then I go to the next trick or talk about something else.
He: "I didn't see it! Do it again."
Me: "Now who's fault is that?"
or "Next time make sure to pay more attention."
She: "Please do it again."
Me: "Only if you French Kiss me."
If she does then what the edited I'll do it again...
and you would too admit it!!!
He: "Please let me see it again."
Me: "OK, but really quick 'cause I'm in a hurry",
then I make a very quick movement of my hands
and say "Done!"
She: "I want to see that again."
Me: "Well, I'll video tape it for you so you can watch it as many times as you want. But that's going to cost you..."
He: "Do that again!"
Me: "Do what?",
then pretend I don't know what he's talking about.
She: "I really want to see it again."
Me: "I bet you do."
He: "Can you repeat that?"
Me: Repeat the last words I said
She: "I want to see that trick again."
Me: "They all do."
or "You're not the first one."
He: "I want to see it again."
Me: "To bad you can't Time Travel."
She: "Can I see it again?"
Me: "Not unless I repeat it! And that's not going to happen."
He: "Would you repeat it?"
Me: "Yeah, eventualy."
or "Well, if I run out of new ones."
She: "Show me that trick you did the other day."
Me: "You must be confusing me with someone else."
She: "Can you show my friends that trick."
Me: Whispering "Shhhhhh... it's our secret."
She: "Hey, do that trick again!"
Me: "I feel used!"
or "Is that all I am to you? Entertaintment."
or "You only care about my tricks."
He: "Do that one again."
Me: "OK",
then I do a different one.
Then he says: "No, not that one.",
so I tell him: "Oh, right... it was this one.",
and I do yet another different trick.
Again he complains: "That's not the one",
so I finally say: "I'm sorry... you think it's easy being a magician."
He: "Would you show me that trick again?"
Me: Shoked "Haven't you heard about the Magician's Code?",
then I add: "We have to swear, under penalty of death, never to repeat a trick."
She: "Can you do it one more time?"
Me: "Sorry, it's against my religion."
or "I can go to prison for that!"
Well, I can keep on going... but these should be enough to get your Imagination going... this will give you some ideas of the type of answers you can give them. I know not all of them are good. In fact, you might not like any of them. (Well, screw you!) I would like for you guys and gals to keep posting more ideas. And, if you don't think that any of these are funny, then you have really bad taste.

Now, don't take me seriously.
Hope this post was somewhat helpful. And if it wasn't SUE ME!