Can also refer to older members of our society.
Timmy; Ok you are more senior than me
Other freshmen girl-"yes"
Freshmen girl 1-"What a badass"
2. Old man: Can I have the senior discount?
Today's wayward youth: You just got a social security check for $300,000! Why should you get a discount?
Old man: Because I'm old.
Today's wayward youth: Go to hell!