From sona pona, the Toki Pona wiki

kijetesantakalu was originally a joke word. The word is now used for other reasons as well, be it as a symbol of identity or simply liking the sitelen pona glyph. These speakers sometimes shorten it to kijete or kije, especially to use it as a headnoun. See Abbreviations § kijetesantakalu. Opinions on the word's seriousness vary between speakers.