The 6th generation of the Chevrolet Corvette.

A person with an outwardly dominant, masculine, or aggressive personality, but who also enthusiastically takes on the submissive or "bottom" role in the bedroom.

The toothiest of all blowjobs that inflicts unbearable pain on the receiver. The name C6 originated for a machine called the Bear C6. The Bear C6 grabs a tree at its base and cuts it, it then procedes to slide up and down the log shredding of branches and bark. This process resembles a toothy blowjob and is the origin of the name C6.

The next Corvette, The Chevrolet Corvette C6.

stands for cybersex

A radio transmission in Counter-Strike, meaning:

Reporting in,

but said in normal life

A short way of saying C6H12O6 (or glucose), describing a sugary homosexual (gay).