For sex
:)
Fs can mean For Sale, Full Size. Do you mean SF? Square Footage.
In the personal ads that I have seen, LOS means Lost or Stolen.
Androgynous
Long Term RelationshipLTR in personal ads means long term relationship.
OHAC mean in Relationship
friends with benefits.
Bareback, or no condom
In Search Of
water sports
professional
Pay to play
"short Message service" in other words text. It's not exclusive to personal ads.