Sorry to hear hubby is being an arse..
There is no proper way to bring kids up we all learn as we go along , i think what your hubby said was a scare tactic?
Doubt if your son would be permanently scarred by it x
I used to live near a prison when my kids were small and taking them out in the car would be a nightmare at times and once i pulled over opposite the prison and said i was taking them to it!!
They screamed , grabbed me, and said 'NO MUM'!! , after that though they behaved !
Just try and ignore him & his comments, even try and be 'unusually' happy and unbothered......it would prob be hard to get him to apologise.... i'd just have the don't care anymore attitute, and carry on, but that's me
.......either that or give him a right hook and show him who's boss! LOL
hope it all sorts out for you xxx chin up!