| Abbreviation | Definition |
|---|---|
| CSI | Can't Speak Italian |
| CSI | Can't Stand It |
| CSI | Cookies Sound Interesting |
| CSL | Can't Stop Laughing |
| CSL | Chattanooga Sports Leagues |
| CSM | Cigarette Smoking Man |
| CSN | Computer Says No |
| CSP | Chronically Serious People |
| CST | Continuing Story Thread |
| CSTM | Chuckling Silently to Myself |
| CSX | Chicken S*** Express |
| CT | Calling Time |
| CT | Can't Talk |
| CT | Completely Trippendicular |
| CT | Cool Topics |
| CTA | Cover Their A** |
| CTBE | Come To Bed Eyes |
| CTC | Care To Chat? |
| CTD | Christens These Days |
| CTD | Close To Desktop |