Slightly adulterated nickname of a particular elitist britishhacker from manchester, some of whose antics were widely reported by the press in the 90s.
Hacker A: Hey who's that skinny cunt doing lines in the corner and kickbanning ppl on irc?
Hacker B: Oh yeah thats Cockfire, britains most notorious whacker.
Mary: I am so sick and tired of lying and cheating boyfriends... I think I will switch teams and go cockfree for a while..
Kate: Welcome to the team hun!