The "telling you how it is" is more worrying if you ask me! It really still depends, If i am trying to get a point across and my DP interrupts i have been known to say "just shut up a minute will you" or just "shut up, i'm talking now" which is actually bloody rude but is said in good humour and exasperation because i tend to make long sentences and he doesn't have the patience to listen!!
If he is laying the law down about something though - no no no
Wait until HE has wound his neck in and calmed down and sit him down and TELL him that you will not be spoken to that way, that you find it upsetting and disrespectful.
What was he "laying down the law" about? its ok if you'd ratehr not say - if its "the voice is better than BGT" type argument then its not so bad, but family finances and other important things - not on!