noun, resulting from a contraction of juvenile and paraphernalia.

used in reference to older persons copying traits or customs of youth: babydoll t-shirts, glitter, 'yo mama' comebacks, pokemon, spice girls, skateboarding, etc.

does not apply to children doing these things, since then the things are in their expected context. denotes a level of self-ridicule, parody, or nostalgia in these behaviors.
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