Acronym: Head Down Mother Fucker! Typically used to indicate that either oneself or the recipient should put their head down and do some work.
Worker1: So worker2 how was your weekend?
Worker2: Good thanks. You?
Worker1: Oh fine. Hows the kids?
Worker2: Yeah pretty go-
Boss: Head Down Mother Fucker!
Worker2: Good thanks. You?
Worker1: Oh fine. Hows the kids?
Worker2: Yeah pretty go-
Boss: Head Down Mother Fucker!
by thehelix August 17, 2010