Snapchat has become one of the best and fastest growing social media platforms because of its unique features that makes a snapchat a unique concept. This is the platform where users use abbreviations in their conversations. SFS is one of those abbreviations that is used in snapchat. SFS Snapchat stands for Snapchat for Snapchat or Snap for Snap or Shoutout for Shoutout. This means that the other person wants a follow back from you.