From the great Bill Watterson:
Just thinking of all the English native-speaker CELTA trainees entering into a whole new relationship with their own language on the course….bon voyage (and never mind Hobbes’s cynicism)!
*For actual ELT comics: http://www.langwichscool.com/
*Update (a couple days later):
Why was I thinking of so-called “native-speakers” exclusively in this post? Surely the bilingual/”non-native” speakers have a similar experience of ‘stretch’ in their awareness of language and language elasticity?
I guess my first answer to that would be “because it’s most obvious in them/they react most viscerally”.
Something to think about more.