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a term used to stop the divulging of embarrassing details from the night (or nights) before, when one was blackout drunk and out of control. Made in reference to the way that Jagermeister can cause one to black out, similarly saying that the Jagerfile blackens out the memory of the previous evening(s)
Guy 1: Dude, you were wasted last night. You totally...

Guy 2: Jagerfile.

Guy 1: Aww... Fine, never mind.
by avenged187 March 01, 2012