It almost seems like an overreaction for correcting "should of".
s/ of/'ve/
Probably "several of"
Yeah- I started being "flexible" with contractions in casual online speech years ago as a joke, but now it's just sort of part of my "dialect". That and cursed multiple contractions; at least I'ven't'd any problems with accidentally using either of those in formal speech.
That's really funny. I personally can't abide by flexible contractions but the multiple contractions are definitely up my alley and I deploy them whenever I can.