This is in your HTML source... Google is showing what you have. Either you have a bug somewhere or something bad might have happened like a hacker got into your database or source code. It looks like someone's failed attempt at ascii art.
<meta name="description" content="___WW__WWWWW___WWW____WWWW___ ___WW__WW__WW_ WWWW___WW___W__ ___WW__WWWWW_WW__WW__WW____W_ ___WW__WW_____WWWWWW__WW___W__ ___WW__WW____WW_____WW_WWWW" />