a) The act of being/acting totally awesome.
b) A noun which means 'crown'.
a) He AGSed all day and night!
She's been AGSing since the day she was born.
b) He wears a huge Ags on his head.
A person of either gender who has no spine or is generally considered weak sauce.
Don't be such a pansy - "Dawn of the Dead" wasn't THAT scary.