A term used in the show Metalocalpyse on Episode 1.4 (Dethtroll) by Toki and Skwisgaar to describe old-fashioned, ancient, out of style accoustic guitars- which according to them, should be avoided at all costs because they're apparently for pussies and grandpas. It can be used in the singular and plural sense, due to its pseudo-Nordic roots.
Murderface: What are those wooden things? Chairs?
Barkeep: They are acoustic instruments.
Toki: What is acoustic? Oh, you mean a grandpa's guitars?
Skwisgaar: A grandpa's guitars? That's for pussies and grandpas. I think you know it.
Barkeep: It's your only choice, I'm afraid.
Pickles: Whoa, this is a tough one guys.
Nathan: Pickles is right, we have a tough choice. Playing acoustic is totally lame and not metal. But then again, if we don't put that troll back to sleep, we may never be able to check our e-mail with high-speed DSL again.

Toki: THE GRANDPA'S GUITARS ARE SMASHEDS!!
Skwisgaar: (referring to lake troll) Dudes, here comes that guy!
Nathan: Wait! The phones! Use the Dethphones! Throw them at that guy!
by VioLush April 23, 2007
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The act of submerging your hands into water for an extended period of time allowing them to become wrinkled, then proceeding to finger a girl with your wrinkled hands.
Man 1: "Dude, how was your date with Vicky?"
Man 2: "It was alright. We got in the hot tub, then I totally gave her Grandpa's Gift."
by Glenjamin' July 09, 2010
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When you eat Captain Crunch with whiskey instead of milk. Usually influenced by a hangover.
"Zack slept over my house after the party, and when I woke up, I saw him eating a bowl full of crunchy grandpa. Freaking gross"
by MMjr April 24, 2008
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Technique used mainly by males to sleep in the same quarters (Bed, Couch, etc.) without having the threat of gay/awkward encounters. The two will lay in opposite directions (feet next to head) mirroring the position used in the movie Willy Wonka and the Chocolate Factory by Grandpa Joe and the other geriatrics in that beat on shit-hole house.
I was Grandpa Joeing on the couch with Raff yesterday watchin golf

Yo I dont have anywhere to sleep, you mind if I Grandpa Joe with you.

I slept with Jim, its cool tho we Grandpa Joe'd
by T$SS March 12, 2011
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1.An acoustic guitar or classical guitar.
2.A lute, mandolin, or other medieval era stringed instrument.
3.A guitar played by a man whose child has had a child.
Skwisgaar Skwigelf- "You want us to play the grandpa guitars?!"
by DETHKLOK!!!! November 27, 2007
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When a fat, hairy, man over 40 years old (preferably a grandfather) makes inappropriate sexual comments to girls at work that are half his age. You will know a grandpa carl by the nascar pictures on his desk and a tendency to eat salted mixed nuts.
Did you hear what he said to the new girl? If anyone other than grandpa carl said that we would be in HR.
by clarc31 January 23, 2007
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Similar to a mom friend or dad friend, a grandpa friend is usually the grumpy one of the group, and has a hard time showing his love for other friends in the group but its there. He generally complains about topics such as back pain (or chronic pain anywhere), how he doesn't like the current generation (even though he likely is part of it), or how things were better when he was younger despite being no older than his early 20s.
Paul: I don't think that Greg likes me
Tina: He likes you, its just hard for him to show it-he's a grandpa friend
by NamelessGhoulWater August 09, 2017
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