| | Txt words we should all know for C |
| | 404 | | clueless |
| | :'-( | | crying |
| | c%dnt | | could not |
| | c%l | | cool |
| | cd | | Compact Disc |
| | cd | | crazy dance |
| | cd | | Cross Dresser |
| | cd | | Cross-dresser |
| | centR | | center |
| | centR | | centre |
| | ch$ | | chess |
| | chocl@ | | chocolate |
| | CICO | | Coffee in, Coffee out |
| | CIO | | check it out |
| | CIO | | Chief information officer |
| | CIO | | Cut It Out |
| | cla$ | | class |
| | cliK | | click |
| | CLM | | career limiting move |
| | CM@TW | | catch me at the web |
| | cmputA | | computer |
| | cmputA | | Computor |
| | cn | | can |
| | Cof$ | | Church of Scientology |
| | cofy | | coffee |
| | com& | | cammand |
| | com& | | command |
| | comb@ | | combat |
| | communic8 | | communicate |
| | complic8 | | complicate |
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