The great-grandfather of one's spouse.
My great-grandfather-in-law is a good person.
by Rwopazaq November 24, 2019
Get the great-grandfather-in-lawmug. A giant public version of that time-telling thing you put on your watch. Side Note: Five times out of ten, it is safe to assume that said grandfather clock that you see probably wasn't your grandfathers.
by XxLoneWolfxX April 19, 2022
Get the Grandfather Clockmug. Grandfather Yhwach is a wannabe Father Yhwach but with an oddly concerning god complex. The videos he posts are absolutely outlandishly ridiculously terrifying. To be called Grandfather Yhwach means you're a suspicious looking character
by in God we trusts lover💗💕 March 28, 2022
Get the Grandfather Yhwachmug. 
Get the grandfather-in-lawmug. step-great-grandfather.
by Simaduria July 27, 2024
Get the step-great-grandfathermug. 
Get the great-great-grandfathermug.