What does HIOOC mean?
Help I'm out of coffee
Other definitions of HIOOC:
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How to use the term HIOOC:
There are no example uses of HIOOC at this time. We would greatly appreciate your contribution if you would like to submit your own!
More slang terms:

NYI
Not Yet Implemented

WSLS
Win Some, Lose Some

EPIC
Extremely awesome

DAYUM
d**n