D.E.T.

an acronym for the phrase dont even trip.
which is another way of saying
dont get crazy.
dont get hostile.
dont get flustered.
dont get your panties in a bunch.
dont get aroused.

Cheryl: eeeek.! i didnt do my homework. Mr.Danja is going to flip.
Mandy: D.E.T. we can copy from one of the geeks Erika or Carla.
Cheryl: what if he finds out i wont graduate.
Mandy: for the last time D.E.T. if we cant copy we will just have nurse Dina sign us out sick.
Cheryl: damn mandy youve always got a plan.