Why don't you just ask him? Clint's not going to bite your head off. http://www.msgnetwork.com/metro_soccer_report.jsp
if i had to guess, i'd say it was a georgia thing - i vaguely remembering him referring to it during a USMNT halftime show
http://sportsillustrated.cnn.com/soccer/world/2002/world_cup/news/2002/06/16/usa_mathis_rb/ "Nicknamed Cletus by teammates for his Georgia drawl, Mathis plays up to his reputation as a southern redneck in a sport dominated by the soccer hotbeds of California and New Jersey." "teammates" refers to the USMNT ones in this article.
I think it's a reference to Cletus T. Judd, country music's answer to Wierd Al Jankovic. Don't tell Clint I told you though ..... don't want him asking me "who's the fat a** now?" Looks to me like Clint's form is coming around lately.
Re: Re: Where does the nickname Cletus come from? oops, meant to put in the link to info on Clint's alter ego http://www.comediansusa.com/southern/judd_cledus_t.html