Square Foot/Feet. SF. Source Forge (web site)

What does SF mean sexually?

Results: When all participants are considered as a unique group, the mean intensity of the most intense "normophilic" SF (oral sex) is significantly higher than the mean intensity of the most intense "paraphilic" SF (being sexually dominated for women and watching two women having sex for men), as expected from the DSM ...

What is SF on Snapchat?

SFS on Snapchat means "Shoutout for Shoutout". Basically, it means a Snapchat user is looking for a little shoutout on your Snap. The same acronym is used on Instagram too, and it's used to promote posts on other pages. [