Ok I know that I will pass for VGC's grammar nazi but I think you meant to say "Take this rumor with a grain of salt". not for a grain and certainly not for a "gain", that literally means nothing.
Sorry, these little things bother me, it's because of my OCD.
Technically that would be OCPD, not OCD. OCD, Obsessive compulsive disorder, is a more serious disorder that includes people compulsively washing their hands or checking that their stove is off or doors are locked, among other examples. OCPD, Obsessive compulsive personality disorder, is the one where people get obsessed with perfectionism and neatness, such as perfect grammar.