I was watching a short youtube video in which, if I understood the gist of it, a bilingual gentleman was giving students advice in how to translate. I thought I heard him address his audience repeatedly by 'tu'. I don't know if it was a tongue in cheek humour or was he being unusually familiar, The video was here:
https://www.youtube.com/watch?v=yHKoBeDltjY
Merci.