Top Definition
Save the roaches from your joints and combine the resonated pot into a new (more potent) joint. If planned correctly, this technique can be repeated endlessly, producing high-potency grandparent joints and even great-grandparent joints.
"Looks like we've got enough here for a Grandparent joint, anyone down?"

"I have been saving the great-grandparent joint of last summer for my backpacking trip."
by SativaVata May 05, 2009
5 Words related to Grandparent Joint

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