So if you go up to Paddy and try and invoke the "So" rule you will probably receive a well deserved smack in the face,so you will.So a few Irishmen of my happy acquaintance use the word all the time so they do. :-)
To be accurate - in order to invoke the 'So' Rule, you have to follow it with "... what you're saying is …" or a version thereof, followed by something that the original speaker did not say at all, and then argue or criticise the speaker for something which they have patently not said.
Lots of examples on this site - specially in the News section!!