Check fire – order to stop firing due to a mistarget or error.
Blooper OR Thump Gun - grenade launcher
Back on the block – behaving like a civilian
AHA – Ammunition Holding Area (where ammo is stored).
Broke Dick – Marine off duty for medical reasons
Call out OR Drop a dime– issue a challenge with incriminating evidence
Civ div – return to civilian life
C & S – Clean and sober
D & D – drunk and disorderly
DI – Drill Instructor
EAS – end of active service or discharge
GI shower – bathing with wipes or limited water
Good to go – satisfactory
Grab-ass – horse play
HE – high explosives
Head – bathroom
Inkstick – pen
Nuts to butts – standing in line extremely close
O-dark thirty – very early hours before dawn
OOB – Out of Bounds
OM – Oscar Mike – On the move
Pucker factor – high level of anxiety in stressful situations
Rack or Sack – bed
Sandbox – desert
Scullery – where dishes are washed
Secure – put away or lock up as in secure the area
Secret squirrel – intelligence personnel or activities
Shit-brick – useless or ignorant person
Snot locker – nose
SSDD – same shit different day