What is Yag Si?
1.
A secret language whereby names are reversed and added after the two words "YAG SI...". If your name was Dave, you would say "Yag Si Evad". It is commonly regarded as a complimentary reference to a friend/relative/colleage who is not in the room at the time.
"Yag Si Enyaw", "Yag Si Omod", "Yag Si T Ynnad" "Yag Si Evad", "Yag Si Nhoj"