Nostalgia for past decades exploded with the phenomenon of Stranger Things. It made us love '80s fashion, glam rock, and even mullets.

Nostalgia for past decades exploded with the phenomenon of Stranger Things. It made us love '80s fashion, glam rock, and even mullets.

Things change so fast that they can become an age defining factor in people's lives. Redditors are sharing what they remember from their childhood that clearly suggest how old they are without needing to say their age.

Things change so fast that they can become an age defining factor in people's lives. Redditors are sharing what they remember from their childhood that clearly suggest how old they are...

"I'm this old" is a Twitter challenge where people are posting pics with old-school stuff that proves they're no longer kiddos. Here are some of the most nostalgia-inducing examples!

"I'm this old" is a Twitter challenge where people are posting pics with old-school stuff that proves they're no longer kiddos. Here are some of the most nostalgia-inducing examples!