YTY for Yell The Youth !
Why the youth ? Because the sound produced by YTY can only be heard by people aged of x and less years.
You can choose age to be 18, 25, 30 or 39.
Aged people : Use YTY to young in front of you home go away.
Young people : Use YTY to make some fun at school, university, home, outside.
YTY is and will always be free.