People born before 1946 are called : The Greatest Generation.
People born between 1946 and 1964 are called : The Baby Boomers.
People born between 1965 and 1979 are called : Generation X.
And people born between 1980 and 2010 are called : Generation Y.
Why do we call the last group : Generation Y ?

Y should I get a job?
Y should I leave home and find my own place?
Y should I get a car when I can borrow yours?
Y should I clean my room?
Y should I wash and iron my own clothes?
Y should I buy any food?