When your department at work just absolutely loses it, mostly due to attending multiple unecessary meetings that last entirely too long.
Gah! I had 6 meetings this week!? If I have one more meeting I am going to go totally departmental!
by bittygirla May 23, 2007
The opposite of department-cest. Dating/fucking someone outside your academic department. Usually applied in reference to graduate students.

From the genetics term "outcross" referring to a mating between individuals from two different linages or populations.
Damn, you have screwed every chick in the department aside from your officemates! Time for a departmental out-cross!
by Mike4587 December 1, 2010
when your boss is transferred to another department, and the replacement is some hack you used to have seniority over, hence making your job a living hell.
i ca'nt believe they made that choad eater my boss. he does'nt know his head from a hole in the ground. i sure as hell wo'nt listen to that inter departmental penile implant. what a bunch of cocksmunch's!
by freedav05 January 8, 2007