re: 'fidgiderry'...my cousin said 'batumfritter'..but HE was only 5, and learned better. Some adults do not care to learn.

I do grate (grit?) my teeth over randomly scattered apostrophes, with little regard whether they are used as plurals, possessives or contractions.

and I have totally given up on educating the masses on the difference between 'your' and 'you're' or 'there', 'their' and 'they're'

I also remember trying (with mixed results)to correct some young lads who said things like "He was standing in the filled (field), looking in the mere (mirror)"