Duping

My friend told me a new way to dupe but I cant seem to get it to work.
It involves connecting two accounts to a realm (via realmbot) and setting the notifier delay to 7 seconds then trading after that and one of the clients should crash and then you have duped

Does this really work and if it does is there a easier way to do it?

Pretty sure the only working methods are the oryx one and the one in my signature...