Thank you for explaining the meaning of SFS on Snapchat, which stands for Shoutout for Shoutout. It's helpful to know the steps involved in exchanging snaps for a shoutout. Adding the person you want to exchange snaps with is the first step, and to do this, you'll need to convince them and obtain their Bisp Snapchat username.

Once you have their username, you can follow these steps:

1. Open Snapchat and go to the Camera Icon.
2. Create a Snap.
3. From the available options, add text and tap on the "@" sign to mention the user you want to give a shoutout to.
4. Place their username in the center of the screen and select the "Add to My Story" option.

These steps will allow you to give a shoutout to the desired user on Snapchat. It's a popular way to engage and connect with others on the platform.