So, out of nothing more than morbid curiosity, I surfed CL personals the other day and noticed something in the "couples seeking..." sex-tion. Some are looking for a MFM threesome, some for MMF, and others for FMM. Is there some significance to the ordering of the letters when soliciting/discussing said activities? Does MFM imply no contact between the men whereas MMF implies some bi activity? Does FMM imply a Dom role on the part of the lady? I figured there were enough swingers / open relationship types here that if there were a secret code, someone would know it. Oh, and likewise for the ffm combos. Is there some code that does/does not imply girl-girl sex in those situations?