A person who starred in a series of Disney movies as a child or teenager.
Typical Disneykids are well groomed, burst out in song every so often, full of energy, wear colourful clothing and a generally too happy.

A person with an outwardly dominant, masculine, or aggressive personality, but who also enthusiastically takes on the submissive or "bottom" role in the bedroom.

This is a bunch of kids that are born from 1991-present that are pretty clean cut and Disneyfied. They grew up with Disney and don't know life without something related to Disney shoved to them. They were born with The Lion King, then they are shoved Lizzie McGuire, Hannah Montana, High School Musical. These kids act like they came off the Disney channel and they are soccer momed

Similar to an Indie Kid, only a Disney Kid wears bright clothes and listens to happy music because they have chosen not to grow up.
A Disney Kid's "Favourite Movies Of All Time" list will probably include The Incredibles, Finding Nemo, The Lion King, Aladdin, The Little Mermaid, Chicken Little, Toy Story, The Lizzie McGuire Movie, and others.
A Disney Kid may or may not have played the videogame "Disney's Extreme Skate Adventure"... and actually liked it.