duplicateMovieClip under onClipEvent

Good day everybody!
I need to have an mc duplicate itself under its own onClipEvent(load) handler. To put it perhaps more clear, something like:
onClipEvent(load) {
//clips duplicate itself
}
I have tried all sorts of combinations of _root.clip.dMC, this.dMC, … , flash always hangs.
Thanks in advance for any help.