A clueball is a person who does dumb things either frequently or infrequently. It can also be used to describe someone who makes stupid comments or is really weird or eccentric. Clueball is also used to describe bad drivers. Clueball can be used as a noun, verb, or adjective.
Person 1: I think we're seeing the beginning of the end of Linux, much the way IE was the beginning of the end of Netscape, SQL Server was the beginning of the end of everyone else's desktop database system, and Excel and Word and a good deal more also succeeded in co-opting technology and product options in the marketplace: The ever-tightening embrace of Microsoft eventually assimilates everything that it touches. Unless history is to be rewritten with this one deal, Linux never looked worse off than it did today.
Person 2: You sir, are a cluebag. I think you fundamentally misunderstand Linux, GPL and the concept of distributions. Please clue yourself in before posting this sort of swill.