Top Definition
When marines are in the midst of being left with out orders, they are therefore told to "standby" Which can be from one minute to an indefinate amount of hours. Leaving the marine to do nothing but sit stare. Which in turn drives marines crazy. Which is followed by crazy ass marines, doing stupid ass shit.
Pfc Smuckatelli: What are we gonna do today?

Pfc D*ckFace: Well, ssgt told us to standby. for god knows how long.

Pfc Smuckatelli: Well you wanna go put on our flaks and practice spartan kicks?

Pfc D*ckFace: Oh fuck ya. ooorah. Thank god for semper standby!
by Pfc Poopy February 27, 2009
5 Words related to Semper Standby

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