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A grumpy grandpa. Grandpa is so grumpy that he's a grumps.
Grandpa is so grumpy that he's a Grumpa!
by Ggmama May 15, 2018
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A grumpy grandpa who always insists that the world was better when he was a kid, and that we're doomed now because (terroists/running out of coal and oil/people becoming stupid). However, the term is affectionate.
Grumpa said the world in 50 years would be like The Matrix after we took him to see it.
by Fuck You Script Kiddies! December 25, 2005
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