Definitions by tjingtjong112

grandsister 

Your grandmothers sister.

boy 1: oh what a old hottie
boy 2: that's my grandsister

grandsister by tjingtjong112 May 9, 2019

grandsister 

Grandsister is your grandmothers sister, yeee boiiiii

Boy 1: Ohh that old hottie
Boy 2: That's my grandsister.

grandsister by tjingtjong112 May 9, 2019