grandsister 

When your sister marries your grandfather.

Dude your grandsister is totally hot.

grandsister by Big Man25 January 8, 2011

Grandsister 

The granddaughter of your sister.

DUDE YOUR GRANDSISTER CAN COOK? AWESOME!

Grandsister by Twight0931 July 30, 2017

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

grandsister 

Your grandmothers sister.

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

grandsister by tjingtjong112 May 9, 2019

Grandsister 

Idk ask me?

Bro your grandsister pooped her pants sus

Grandsister by I’m not Paul February 21, 2022

Grandsister/Grandbrother 

When your son/daughter has a baby with your mom/dad, said baby becomes the your grand-sister/grand-brother.

Today I'm taking my Grandsister/Grandbrother to the park.

Grandsister/Grandbrother by Nullivoid December 21, 2020

Grandmaster Jonathan "June" Makiling Abaya 

Grandmaster Jonathan "June" Makiling Abaya is the founder and originator of Jendo Filipino Martial Arts based on his own concepts and principles called Tri-Force known as the "Tatlong Lakas". He was born in November 16th of 1957 and the second eldest child of the six children of Maria Adoraida Makiling Vda. de Abaya.

Grandmaster Jonathan "June" Makiling Abaya was the founder and originator of Jendo.

Grandmaster Jonathan "June" Makiling Abaya by Teresita I. Biscaro April 7, 2008