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1 definition by
derp-de-derp-a-doo
Guard up
To raise your
guard
. To be on the
lookout
or ready for something or someone that may cause you
harm
either physically or psychologically.
He may
be out
to
get you
so
guard up
when you're alone.
by
derp-de-derp-a-doo
July 31, 2011
Flag
Get the
Guard up
mug.