Someone stuck in the 90s, a few of them not being from the 90s but into 90s shows and culture. Most 90s kids did grow up in the 90s but don't realize half the stuff they 'remember' is stuff kids from the 2000s also remember. They're stuck in a decade and won't let go of it, for better or worst. Most 90s Kids say everything in the 2000s suck because it wasn't from their generation, and most of the time they haven't even watched said shows that 'suck' without giving any backup to why except it not being from their decade.

A person born between January 1, 1982 and December 31, 1991 who lived more than half of their childhood (years aged 3-12) in the glorious decade of the 1990s. Some people born slightly before or after that range might consider themselves 90s kids too as long as they can remember part of their childhood in the 90s. This demographic would have enjoyed the golden age of Nickelodeon shows, the Disney Renaissance, Goosebumps books, tamagotchi, beanie babies, and Sega Genesis/SNES and later PlayStation/N64. Kids born in the late 90s are under the mistaken impression that they're 90s kids because they were simply born in the decade even though they have no real memory of living in it.

Someone stuck in the 90s. They have boyband hair and play pokemon on their gameboy and wear those combat trousers with tassly bits hanging off them, or perhaps a pink camo vest top.
They go on about No Doubt and the Spice Girls. They are quite lame and say things like "radical" and "wicked" in a non-scene kid way, with the occassional "for the win".