It's funny how things stick with you. I was pulled up on "would 
have/ should 
have" by my Grade 6 teacher and it has never left me.
 
Having said that...in a business meeting years ago, I once pronounced the ‘w’ in sword. 

  We both politely pretended it didn’t happen, but at the time I felt like the only reasonable solution would be to quit my job and avoid any future awkwardness.
 
Well…not really, but it was a bit embarrassing.  I mean – sWord…who even says that?  I’ve never said that in my life (prior to, or since) lol.