To give someone or something a special, status or privilege for something done before the new arrangements are made
I will not grandfather one religious leader for his deeds as a child.
by The Return of Light Joker December 29, 2011
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Keeping a plan for your cellphone even though they don't offer it anymore.
Verizon doesn't have unlimited data anymore, but since I got my phone when they did, I'm grandfathering it.
by dralexxx September 18, 2013
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When a female is arranging a hook up with male 1 and, after the arrangement, she enters into a relationship with male 2, then male 1 is grandfathered into her pussy. Meaning, she can have sex with male 1 and it doesn’t count as cheating on male 2 because the arrangement was before she entered into a relationship with male 2. Male 1 was grandfathered into her pussy.
John and I are now exclusive, but I’m still meeting Sam this weekend because he was grandfathered months before John came around.
by Irol J March 8, 2018
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When you search up 'Grandfather clock' but accidentally forget the 'L' and boom you get here.
iy mate, i wazza gonna bye me Pap a grandfather clock but accidentally searched 'Grandfather cock'! help me pls bro
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N. A third-generation blunt, having nothing to do with tediously stuffing an unbroken blunt wrap full of chronic. To make a grandfather blunt, first one must begin smoking first-generation ("normal") blunts and harvesting roaches. After harvesting enough 'resinated' weed from those roaches to roll another blunt, one would twist up with it, creating a second-generation blunt. One would smoke the second-generation blunt and save the roach, then repeat the process with enough second-generation blunts to roll another blunt. Once this final blunt is rolled, one has a grandfather, or third-generation blunt.
"If it takes the roaches of ten blunts to make a second-generation blunt, and the roaches of ten of those to make a third-generation blunt, then this grandfather blunt we are smoking required the smoking of 110 blunts to create."
"Wow, I'm getting really high."
"What?"
"What?"
by The Murderous December 13, 2007
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The residue in a bag of weed that, because of its size, has filtered through the larger buds to the bottom, getting to about the size of a crumb that would be stuck in a grandfather's beard.
Let's roll a joint, I've got a lot of grandfather crumbs.

What the fuck? When he chopped the weed he left me with all the grandfather crumbs. What an asshole!
by 1234509876 October 26, 2010
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A grandfather joint is a joint made out of roaches. The grandfather joint is stronger than a normal joint due the marijuana resin accumulated on the roach.
Lets roll a grandfather joint out of all those roaches.
by MattySA July 3, 2006
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