| Abbreviation | Definition |
|---|---|
| SEC | So Extremely Common |
| SED | Sweet Eagle Dreams |
| SEG | S*** Eating Grin |
| SEIOU | Speaking Economically I O U |
| SEKS | Side Edge of Kamchatka Slab |
| SEL | Someone Elses Love |
| SEP | Somebody Else Problem |
| SEP | Someone Else's Problem |
| SETE | Smiling Ear To Ear |
| SEX | Secret Entertainment eXtreme |
| SEX | South Eastern Xtreme |
| SEXU | Brilliant or nerdy way to say sexy. |
| SF | Sexy Female |
| SF | Silly Female |
| SF | Spam Factory |
| SF | Supremely Frustrating |
| SFA | Sorry For All |
| SFA | Super Freaking Awesome |
| SFA | Sweet F*** ALL |
| SFC | Smiley Face Club |