Spectator: How'd you do that?

You: You know, eat your green vegetables.

Dunno, I was watching a trailer for Spiderman 2 and I thought it might be funny to use that when someone asked how'd you do that for a magic trick...

Some of these have been published in a book somewhere, I just don't remeber which...
"Through years of tedious practice and self-denial."
"Pretty well dont'cha think?"
"Can you keep a secret? So can I."
"I'm a witch and spend my time studying the teachings of Jebediah Cornstalks, the greatest Witch ever to walk the earth."
"Slieght of hand, Duh."
"How much money you got on ya?"
"T.V. special effects."
"I can't seem to remeber..."
"I'd tell you but I'd have to kill you."
"The same way I do this one..." (move on to another trick)

Again, I only made a few of these up, please don't accuse me of stealing.