Top Definition
Euphemism for "(he) doesn't know his a** from his elbow". He doesn't know anything (or doesn't want to know anything).
You can't ask that bus driver about bus route numbers. He doesn't know his brass from his oboe.
#doesn't know s** from shinola #crs #css #nerd #dweeb
by pentozali October 06, 2008
5 Words related to doesn't know his brass from his oboe
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