1 definition by libbypwns

A word/sound made to express feelings in response to a remark or photo that is possibly 'sexy' or purposefully unsexy (and therefore funny).
Most popular on the Internet.
Derives from the word 'ooh' and sounds like 'boom'. What more could you want?
Nate: *glomps*
Mindy: Oom.
by libbypwns February 9, 2009
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