| Abbreviation | Definition |
|---|---|
| SYS | See Ya Sunday |
| SYS | See You Soon |
| SYS | So You Say |
| SYSC | Should-You-So-Choose |
| SYSL | Someone You Secretly Love |
| SYSML | See You Soon, My Love |
| SYSOP | Sent Your Spouse Obscene Pictures |
| SYT | Save Your Time |
| SYT | See You Tomorrow |
| SYT | Sight |
| SYT | Sod You Too |
| SYT | Sweet Young Thing |
| SYW | Slit Your Wrists |
| SYW | So You Wish |
| T | Tacky |
| T | Terrible |
| T/O | Top Off |
| T+ | Think Positive |
| T2 | Talked To |
| T2M | Talk to Me |