Please state in which country your phrase tends to be used, what the phrase is, and what it should be.
Example:
In America, recently came across “back-petal”, instead of back-pedal. Also, still hearing “for all intensive purposes” instead of “for all intents and purposes”.
Most, if not all, pronouns work that way though.
“The man’s arm” becomes “his arm” not “him’s arm”. “The woman’s arm” becomes “her arm” not “her’s arm”. Similarly, “the robot’s arm” becomes “its arm” not “it’s arm”.
I don’t really care if people use “it’s” instead of “its” , but I don’t think it’s a unique exception. The only thing that’s unique is that it is pronounced the same way as if you tacked an apostrophe and an s on the end. If we used the word “hims” instead of “his”, I’m sure people would start putting an apostrophe in there too.
But, “the man” you referred to does not become “hi”. “The robot” you mentioned does become “it”.
Right, and for pronouns you don’t just put apostrophe s after. So you don’t make “it” possessive by adding apostrophe s just like you don’t add apostrophe s to “he” or “him” to make it possessive.
If you treat the pronoun “it” like a regular (non-pronoun) noun instead of like other pronouns, that is itself an exception.