:) while looking for oom we found several :)

OOM : )Out of Memory
OOM :) Out of Mana (gaming)
OOM :) Out Of Mana (Everquest)
OOM :) Order Of Magnitude
OOM :) Out of Mind (gaming, Red Vs. Blue)
OOM :) Object-Oriented Modeling
OOM :) Out Of Money
OOM :) Object-Oriented Methods
OOM :) Cooma, New South Wales, Australia (Airport Code)
OOM :) Office of the Mayor
OOM :) Out of Material
OOM :) One-to-One Marketing
OOM :) Order of Movement
OOM :) Optimized Online Media
OOM :) Oil Offshore Marine
OOM :) Oil of Milk (solution used by magicians)
OOM :) On-Orbit Maintenance
OOM :) Open Ocean Missiles
OOM :) Online Order Management