Someone that laughs with people when everyone is looking, but laughs at them with others from the security of their secret shell people and places.
He/she didn't want to come out of his/her shell and laugh at the same people openly and directly that he/she laughed at with others, since peoplemight think of it as backstabbing.
a shell you would find on the sands of a beautifulbeach.
also, a cool nick name for a girl of the name: Shelley, Shelly, or Shellie.
MELONY: did you see how beatiful that SHELL was?!?!
HANA: oh so gorgeous!
BOB: hey, shell, come here for a second!
JOE: i dont think she heard you, bob.
BOB: HEY, SHELL!!!!!!!! COME HERE FOR A SECOND!!!!!!!!!!!!!
JOE: wow... ok... i think she heard you this time!
what you say to someone whos just embarrased themselves in public, often accompanied by opening your hand in their face, then closing it as you draw your hand away, like a shell closing. we was saying this in manley park school in manchester in 1980 ;)