etymology: concatenation of the phrase "it's a trap", popularized by the character Admiral Ackbar in the movie Star Wars:Return of the Jedi (RotJ)
1: -- used to alert others of a trap or deception
2: -- used to express surprise upon discovering a trap
Lando: We've got to be able to get some kind of a reading on that shield, up or down. Well, how could they be jamming us if they don't know... if we're coming. Break off the attack! The shield is still up.
Wedge: I get no reading. Are you sure?
Lando: Pull up! All craft pull up!
Ackbar: Take evasive action. Green group, stick close to holding sector MV-7.
Controller: Admiral, we have enemy ships in sector 47.