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Top definition
grandsister
When
your sister
marries your
grandfather
.
Dude
your grandsister is
totally
hot
.
by
Big Man25
January 07, 2011
Get a
grandsister
mug for your barber Trump.
2
Grandsister
The
granddaughter
of
your sister
.
DUDE YOUR
GRANDSISTER
CAN
COOK
?
AWESOME
!
by
Twight0931
July 16, 2017
Get a
Grandsister
mug for your friend Beatrix.
3
grandsister
Your grandmothers
sister
.
boy
1: oh what a
old
hottie
boy 2: that's my grandsister
by
tjingtjong112
May 09, 2019
Get a
grandsister
mug for your daughter-in-law Julia.
4
grandsister
Grandsister
is your grandmothers
sister
,
yeee
boiiiii
Boy
1:
Ohh
that old
hottie
Boy 2: That's my grandsister.
by
tjingtjong112
May 09, 2019
Get a
grandsister
mug for your daughter Larisa.