| F | Female | - | Sms Text Smileys and Emoticons |
| F2F | Face To Face (also Meeting In Person) | - | Sms Text Smileys and Emoticons |
| FAQ | Frequently Asked Questions | - | Sms Text Smileys and Emoticons |
| FC | Fingers Crossed | - | Sms Text Smileys and Emoticons |
| FCOL | For Crying Out Loud | - | Sms Text Smileys and Emoticons |
| FF | Friends Forever | - | Sms Text Smileys and Emoticons |
| FFS | For F*cks Sake | - | Sms Text Smileys and Emoticons |
| FIL | Father In Law | - | Sms Text Smileys and Emoticons |
| FISH | First In, Still Here | - | Sms Text Smileys and Emoticons |
| FITB | Fill In The Blanks | - | Sms Text Smileys and Emoticons |
| FLA | Four-letter Acronym | - | Sms Text Smileys and Emoticons |
| FMTYEWTK | Far More Than You Ever Wanted To Know | - | Sms Text Smileys and Emoticons |
| FNB | Football And Beer | - | Sms Text Smileys and Emoticons |
| FOAD | F*ck Off And Die | - | Sms Text Smileys and Emoticons |
| FOCL | Falling Off The Chair Laughing | - | Sms Text Smileys and Emoticons |
| FOFL | Falling On The Floor Laughing | - | Sms Text Smileys and Emoticons |
| FOMCL | Falling Off My Chair Laughing | - | Sms Text Smileys and Emoticons |
| FTBOMH | From The Bottom Of My Heart | - | Sms Text Smileys and Emoticons |
| FUBAR | F*cked Up Beyond All Repair / Recognition | - | Sms Text Smileys and Emoticons |
| FUD | Fear, Uncertainty, And Doubt | - | Sms Text Smileys and Emoticons |
| FWIW | For What It's Worth | - | Sms Text Smileys and Emoticons |
| FYA | For Your Amusement | - | Sms Text Smileys and Emoticons |
| FYI | For Your Information | - | Sms Text Smileys and Emoticons |
| FYM | For Your Misinformation | - | Sms Text Smileys and Emoticons |
