2 definitions by Nixie~
A slur towards the Japanese group of people, Nakomonkeys. People can only use Sinbmen if they are apart of the group. The Nakomonkeys are a small Men hating & alternatively dressed group, who was very much hated by young local school children thus them calling them a Sinbmen, (Sin Man) or 今月の少女, which is now a slur.
by Nixie~ September 14, 2020
by Nixie~ January 8, 2022