A narcissist.
A police officer assigned to or engaging in illegal narcotics control.
To suffer from impaired judgment due to nitrogen narcosis (for example, while scuba diving).
One who tattles (reports others' wrongdoings), often a child seeking attention.
One who gossips, often for the sake of attention.
telltale; giveaway
To act as a tattletale; to tell on; to give away, reveal, or expose.