Thisledoo There does appear to have been a big shift in the way that word is now used, as happens with language but your son should have explained this or discussed it with you. I would have just as easily used that term without knowing how the common usage has changed.
I used some term or other some time ago I cant remember what it was now but DD put me right by explaining it, she did not fly off the handle. That was out of order of your son.
I would e mail him, say how upset you where about his reaction, apologise and explain that in "our day" Minnie the minx was a just a cartoon character and point him to the history of the character.
If you email him he can then think about it at his leisure and not start trying to justify himself to you on the phone.
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