| IMHO | In my humble/honest opinion |
| IMO | In my opinion |
| IMNSHO | In my not so humble opinion |
| IMAO | In my arrogant opinion |
| FWIW | For what it's worth |
| BTW | By the way |
| OBTW | Oh, by the way |
| RTM | Read the manual |
| RTFM | Read the f**king manual |
| TTFN | TATA for now |
| TIA | Thanks in advance |
| ROTF | Rolling on the floor |
| ROTFL | Rolling on the floor laughing |
| LOL | Laughing out loud |
| AFAICS | As far as I can see |
| OTOH | On the other hand |
| TRMOAS | That reminds me of a story |
| BRB | Be right back |
| HHOK | Ha ha only kidding |
| HHOS | Ha ha only serious |
| RSN | Real soon now |
| WTF | Who the f**k |
| WTH | What the hell? |