| Abbreviation | Definition |
|---|---|
| S | Superheroes |
| S/B | Should Be |
| S/P | Status Post |
| S/R | Streaks and Recents |
| S/S | Spreadsheet |
| S/U | Slide Up |
| S2R | Send to Receive (pictures) |
| S2R | Send to Recieve |
| S2U | Same To You |
| S4D | Speak for the Dead |
| S4L | Sisters For Life |
| S4N | Single For Now |
| S4S | Sh*t 4chan Says |
| S4S | Share for Share |
| SA | Sad Aubergine |
| SA | Sibling Alert |
| SA | Smart A** |
| SAA | Smart A** Answer |
| SAA | Smart Ass Answer |
| SAAAD | Spooky Action At A Distance |