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#
knows one's onions
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to be
thoroughly
knowledgeable
or
competent
in a subject area
Look at
her
working
that poll, she really knows one's
onions
.
by
Drewster888
February 23, 2009
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Get the
knows one's onions
mug.
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Get the knows one's onionsmug. Get the knows one's onionsmug. Get the knows one's onionsmug.