MOTSS

MOTSS /mots/ or /M-O-T-S-S/ n.  [from the 1970
   U.S. census forms via Usenet] Member Of The Same Sex, esp. one
   considered as a possible sexual partner.  The gay-issues newsgroup
   on Usenet is called soc.motss.  See {MOTOS} and {MOTAS},
   which derive from it.  See also {SO}.