To boogie or
dance and usually
jump enthusiastically around whilst listening to J-
Pop or Japanese pop music.
Usually includes the dancer singing what little of the Japanese lyrics they know along with the song, and inevitably singing the English the artist includes as it's the only part they honestly understand.
Though J-Popping is mostly done by Japanese fangirls (though who love everything Japanese, purely because it's Japanese), it is also done by anyone with a passion for
happy, energetic music.