On Snapchat, the "S" abbreviation often refers to a Snapstreak, which is a fun way to keep track of your daily snaps with a friend. Just like the
Snapchat Solar System order, where your top friends are ranked as planets, your Snapstreaks can reflect how close you are with someone. The more consistent the snaps, the higher the "planet" they might be in your orbit. The longer the streak, the stronger the bond, similar to how the Sun holds everything together in the center of the solar system. Keep up the streak, and your friend will stay closer to you, just like Mercury is to the Sun!