Is more used to define who has a clever way with words.Who has the skill to persue someone,or has facility to sweet talk woman.

When some little bitchboy is acting like a little tiny pee pee poo poo baby and messing up the group plans.

Someone who is so witty and clever, that he/she does not realize how witty and clever he/she is. Everything that comes out of this person's mouth is gold, hence the silver in the name, which derives from quicksilver.

is an expression used to describe a person who is able to clearly and effectively express themselves

someone who is good at cunnilingus (aka eating pussy)

A real expression that has nothing to do with sex and existed long before Metal Gear Solid, unlike the other definitions these idiots have put up.

Having a "silver tongue" refers to someone having exceptional skills with lingustics, most often referring to a powerful/influential speaker.

lesbian; dike; butch