Sudda Jokes

This is a true story.
Some decades ago, there was a student at a University, who was selected to a scholarship in abroad.
After he went abroad his teacher who is a professor also went to that foreign university for some purpose, spent the night at the same hostel as that student stayed.
At night that professor heard/saw, that student speaking with the Sudda who is his room mate, unseasily even using hands & legs as in antint times before languages created.
Professor called that student who is a Dr., now lecturing at that same University in Sri Lanka,"this is a very good chance for you to make-up your english speech, talk more with this Sudda & enhance the ability or else your Master degree is valueless" That guy said "yes". Professor went to his country after his work.
After some time professor went there again & saw that guy coming far away speaking fluently with that Sudda. Professor thought that "now my boy is ok with more...