Lingo that is used by the rapper LazerDim700, li twan means lil twin but the nigga can't spell for shit.
Max: Asianrock is your beat!
LazerDim700: ay li twan i een fin try fr on dis shyt.
Max: what does li twan mean Random ATL man: the word li twan means LIL TWIN
Popularized by rapper LAZER DIM 700, "li twan" is another way of saying "little twin", used as a substitute for "twin", the incorrect spelling of the word is due to the nature of lazer misspelling things frequently, which is one of the reasons as to why he blew up.