What does it truly mean to be a 90s kid? I'd say there are two competing definitions that will likely always be at odds with each other. The first “90s kids” are the people who truly spent a bulk of their childhood in that decade; essentially, people born in the 80s. The other group of 90s kids are those born in the 1990s. I am just barely in that latter group of 90s kids, being born in the literal last year of the 1990s.