HAHA just dig a big big big hole in your guitar.. zzzzz
But the boys are right, some effects give good acoustic simulation. Of course, you will want to use a middle pickup for that use, if not it might sound too bassy or treble as compared to other positions.. then again, that's for my axe, dunnoe about the rest.
But one thing is for sure, no matter what... your simulated sound won't beat the natural, acoustic guitar.