| S | Smile | - | ISO Country Codes |
| S2R | Send To Receive | - | ISO Country Codes |
| S2U | Same To You | - | ISO Country Codes |
| S4L | Spam For Life | - | ISO Country Codes |
| SADAD | Suck A Dick And Die | - | ISO Country Codes |
| SAHM | Stay At Home Mom | - | ISO Country Codes |
| SAIA | Stupid Asses In Action | - | ISO Country Codes |
| SAPFU | Surpassing All Previous Foul / F*ck Ups | - | ISO Country Codes |
| SB | Stand By | - | ISO Country Codes |
| SBI | Sorry 'Bout It | - | ISO Country Codes |
| SBTA | Sorry, Being Thick Again | - | ISO Country Codes |
| SBUG | Small Bald Unaudacious Goal | - | ISO Country Codes |
| SC | Stay Cool | - | ISO Country Codes |
| SCNR | Sorry, Could Not Resist | - | ISO Country Codes |
| SDK | Scottie Doesn't Know (reference To Star Trek | - | ISO Country Codes |
| SDK | Software Developer's Kit | - | ISO Country Codes |
| SEC | Wait A Second | - | ISO Country Codes |
| SED | Said Enough Darling | - | ISO Country Codes |
| SEG | Sh*t Eating Grin | - | ISO Country Codes |
| SEP | Somebody Else's Problem | - | ISO Country Codes |
| SETE | Smiling Ear To Ear | - | ISO Country Codes |
| SEWAG | Scientifically Engineered Wild Ass Guess | - | ISO Country Codes |
| SF | Science Fiction | - | ISO Country Codes |
| SF | Surfer Friendly | - | ISO Country Codes |
| SFAIAA | So Far As I Am Aware | - | ISO Country Codes |
| SFETE | Smiling From Ear To Ear | - | ISO Country Codes |
| SFLA | Stupid Four Letter Acronym | - | ISO Country Codes |
| SFTTM | Stop F*cking Talking To Me | - | ISO Country Codes |
| SFX | Sound Effects | - | ISO Country Codes |
| SFX | Stage Effects | - | ISO Country Codes |
| SH | Sh*t Happens | - | ISO Country Codes |
| SHB | Should Have Been | - | ISO Country Codes |
| SHID | Slap Head In Disgust | - | ISO Country Codes |
| SHMILY | See How Much I Love You | - | ISO Country Codes |
| SIC | Spelling Is Correct | - | ISO Country Codes |
| SICL | Sitting In Chair Laughing | - | ISO Country Codes |
| SICS | Sitting In Chair Snickering | - | ISO Country Codes |
| SII | Seriously Impaired Imagination | - | ISO Country Codes |
| SIL | Sister-In-Law | - | ISO Country Codes |
| SIP | Skiing In Powder | - | ISO Country Codes |
| SIT | Stay In Touch | - | ISO Country Codes |
| SITCOM | Single Income, Two Children, Oppressive Mortgage | - | ISO Country Codes |
| SITD | Still In The Dark | - | ISO Country Codes |
| SIUP | Suck It Up Pussy | - | ISO Country Codes |
| SIUYA | Shove It Up Your Ass | - | ISO Country Codes |
| SK8R | Skater | - | ISO Country Codes |
| SL | Second Life | - | ISO Country Codes |
| SLAP | Sounds Like A Plan | - | ISO Country Codes |
| SLAW | Sounds Like A Winner | - | ISO Country Codes |
| SLIRK | Smart Little Rich Kid | - | ISO Country Codes |
| SLM | See Last Mail | - | ISO Country Codes |
| SLOM | Sticking Leeches On Myself | - | ISO Country Codes |
| SLT | Something Like That | - | ISO Country Codes |
| SM | Senior Moment | - | ISO Country Codes |
| SMAIM | Send Me An Instant Message | - | ISO Country Codes |
| SMB | Suck My Balls | - | ISO Country Codes |
| SME | Subject Matter Expert | - | ISO Country Codes |
| SME1 | Some One | - | ISO Country Codes |
| SMEM | Send Me E-Mail | - | ISO Country Codes |
| SMH | Shaking My Head | - | ISO Country Codes |
| SMIM | Send Me An Instant Message | - | ISO Country Codes |
| SMOP | Small Matter Of Programming | - | ISO Country Codes |
| SNAFU | Situation Normal, All F*cked Up | - | ISO Country Codes |
| SNAG | Sensitive New Age Guy | - | ISO Country Codes |
| SNERT | Snotty Nosed Egotistical Rotten Teenager | - | ISO Country Codes |
| SO | Significant Other (spouse, Boyfriend / Girlfriend) | - | ISO Country Codes |
| SOB | Son Of A B*tch | - | ISO Country Codes |
| SOBT | Stressed Out Big Time | - | ISO Country Codes |
| SOGOP | Sh*t Or Get Off The Pot | - | ISO Country Codes |
| SOH | Sense Of Humor | - | ISO Country Codes |
| SOHF | Sense Of Humor Failure | - | ISO Country Codes |
| SOI | Self Owning Idiot | - | ISO Country Codes |
| SOIAR | Sit On It And Rotate | - | ISO Country Codes |
| SOL | Sh*t Out Of Luck | - | ISO Country Codes |
| SOMY | Sick Of Me Yet | - | ISO Country Codes |
| SOOYA | Snake Out Of Your Ass | - | ISO Country Codes |
| SOP | Standard Operating Procedure | - | ISO Country Codes |
| SORG | Straight Or Gay | - | ISO Country Codes |
| SOS | Same Old Sh*t | - | ISO Country Codes |
| SOSDD | Same Old Sh*t, Different Day | - | ISO Country Codes |
| SOT | Short On Time | - | ISO Country Codes |
| SOTMG | Short On Time, Must Go | - | ISO Country Codes |
| SOW | Speaking Of Which | - | ISO Country Codes |
| SOZ | Sorry | - | ISO Country Codes |
| SRO | Standing Room Only | - | ISO Country Codes |
| SRSLY | Seriously | - | ISO Country Codes |
| SRY | Sorry | - | ISO Country Codes |
| SSC | Super Sexy Cute | - | ISO Country Codes |
| SSDD | Same Sh*t, Different Day | - | ISO Country Codes |
| SSEWBA | Someday Soon, Everything Will Be Acronyms | - | ISO Country Codes |
| SSIA | Subject Says It All | - | ISO Country Codes |
| STBY | Sucks To Be You | - | ISO Country Codes |
| STD | Seal The Deal | - | ISO Country Codes |
| STD | Sexually Transmitted Disease | - | ISO Country Codes |
| STFU | Shut The F*ck Up | - | ISO Country Codes |
| STFW | Search The F*cking Web | - | ISO Country Codes |
| STM | Spank The Monkey | - | ISO Country Codes |
| STPPYNOZGTW | Stop Picking Your Nose, Get To Work | - | ISO Country Codes |
| STR8 | Straight | - | ISO Country Codes |
| STS | So To Speak | - | ISO Country Codes |
