| Acronym | Meaning |
| SUFI | Shut Up F*cking Imbecile |
| SUFI | Super Finger |
| SUFID | Screwing Up Face In Disgust |
| SUL | Snooze You Lose |
| SUP | What's Up? |
| SUYF | Shut Up You Fool |
| SWAG | Scientific Wild Ass Guess |
| SWAG | SoftWare And Giveaways |
| SWAK | Sealed / Sent With A Kiss |
| SWALBCAKWS | Sealed With A Lick Because A Kiss Won't Stick |
| SWALK | Sealed With A Loving Kiss |
| SWDYT | So What Do You Think |
| SWG | Scientific Wild Guess |
| SWIM | See What I Mean? |
| SWIS | See What I'm Saying |
| SWL | Screaming With Laughter |
| SWMBO | She Who Must Be Obeyed |
| SWU | So What's Up |
| SYS | See You Soon |
| SYT | See You Tomorrow |
| S^ | What's Up? |
| T&C | Terms & Conditions |
| T+ | Think Positive |
| T2GO | Time To Go |
| T2UL | Talk To You Later |
| T@YL | Talk At You Later |
| TA | Thanks Again |
| TABOOMA | Take A Bite Out Of My Ass |
| TACP | Take Chill A Pill |
| TAF | That's All, Folks! |
| TAFN | That's All For Now |
| TAH | Take A Hike |
| TAKS | That's A Knee Slapper |
| TANJ | There Ain't No Justice |
| TANSTAAFL | There Ain't No Such Thing As A Free Lunch |
| TAP | Take A Pill |
| TARFU | Things Are Really F*cked Up |
| TAS | Taking A Shower |
| TAW | Teachers Are Watching |
| TBA | To Be Advised |
| TBC | To Be Confirmed |
| TBC | To Be Continued |
| TBD | To Be Determined |
| TBE | Thick Between Ears |
| TBH | To Be Honest |
| TBYB | Try Before You Buy |
| TC | Take Care |
| TCB | Trouble Came Back |
| TCOY | Take Care Of Yourself |
| TDM | Too Darn Many |