agism
The act of saying that one age deserves more rights than another age, used a lot by adults for some very strange reason. Agists are just as bad as sexists, if not even worse.
Agism that refers to older people (TV-Y for TV, ages 2-7 crossword puzzle, etc.) is alright though.
Agism
Treating somebody younger/older better than somebody else because of their age.
Friend: My mom grounded me because I yelled at my little sister for hitting me with a stick...
Me: Jeez, the Agism is real
Me: Jeez, the Agism is real