Magic word to leave queue. Is this possible?

Well It’s all in the title but more details:
I’m using Nuance recognizer with asterisk on my IVR.
While people are waiting in queue, I’d love to have a message that say:
Say ‘MAGIC WORD’ to get out of the queue and then you get out of the queue if you say MAGIC WORD
Any one knows how to do this?
I know you can exit queue with a keystroke but how about voice? I looks like I would need use simultaneously queue and speechbackground

more than a 100 views and no suggestion???
Help anyone?

Normally means that people don’t think it can be done, but don’t have the time to do the research to confirm that.

ok I did some googling and couldn’t find anything so I’ll assume for now it cant be done