Y Why?
Y Yawning
YR Yeah Right
Y2K You're too kind / Year 2000
YBS You'll be Sorry
YCCOI You can count on it
YD Yes dear
YDI You deserved it
YG2BJ You've got to be joking
YGG You Go Girl
YGM You've Got Mail
YK You're Kidding
YKHII You Know How It Is
YKI You Know It
YM Your Mom/ Yahoo Messenger
YMBJ You Must Be Joking
YPML You're Pulling My Leg
YR Your
YRAG You Are a Geek
YRG You are Good
YRL You are Lame
YSW Yeah sure whatever