The Freelance

Friend: Free software doesn’t cost anything, so they call it "free"
Programmer: You're wrong, young padawan...
Programmer: Free as in freedom, not as in "Free beer"... But most people usually misunderstand...
Programmer: For example, I did a freelance job in January, but I think they thought that was a "free"lance like "free beer", because they haven't paid me yet...