Every generation has its own sense of humor. Older generations just don't get it and the younger ones just can't understand it.
Generation X had a love of irony. In the '90s, they wore old T-Shirts of bands they didn't like and laughed at obscure references in music and films. "Pulp Fiction," anybody?
Millennials are a much more sincere group with a shared love of the absurd. Shows like "Rick and Morty" and "The Eric Andre Show" are great examples.