| Abbreviation | Definition |
|---|---|
| SCUM | Starfire Crunchers United Many |
| SDFT | So Darned Freaken True |
| SDFT | So Darned Freaken True |
| SDFT | Super Duper Fun Time |
| SDI | Silicone Defense Implant |
| SDJ | Starter Deck Joey |
| SDK | Sillies Don't Know |
| SDM | Single Digit Midgit |
| SDM | Sonic Death Monkey |
| SDMS | Spartans Do More Stuff |
| SDMT | Swear Down Mad Ting |
| SDP | San Diego Posse |
| SDP | Self Destruct Party |
| SDS | Super Dupe Snooper |
| SDY | Start Deck Yugi |
| SE | Sheep Everywhere |
| SE | Shoddy Equipment |
| SE | Sloth Edition |
| SE | Slow Edition |
| SE | Slower Edition |