A squid is someone who lacks courage, loyalty and intelligence who easily conforms to their surroundings. A squid lacks individuality and integrity. A squid is the combination of a rat, a chameleon and a coward all at the same time.
Kevin: Why did nobody stand up for that kid getting bullied?
James: Because his classmates were a bunch of squids.
Kevin: Why does that kid spread negative rumours about his friends?
James: Because he is a squid.
Kevin: Why won't that kid stand up for what he believes in?
James: Because he was raised to be a good-for-nothing squid.