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1 definition by
c00kie monsta
ur sister
just like saying
ur mom
except for a
sister
as indicated in
title
boy 1:
u kno
who i
screwed
last night?
boy 2:
UR SISTER
!!
boy 1:hey, that was mean :(
by
c00kie monsta
September 3, 2006
Flag
Get the
ur sister
mug.