A lecherous old man. Clever and probably killed a lot of people in the Vietnam War.
Oh god Grampy’s coming over tonight?! Warn the neighbors after what happened last time....
by OD1N99 October 13, 2020
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Grampy is another way of saying Grandpa or Grandfather
My grandparents are called Grampy and Nana
by HolmbergHeart January 15, 2012
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noun: one, usually being a grandpa, who excels are barbecuing.
My Grampy will BBQ for you!
by Suckafishhh November 17, 2008
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Adjective: The attitude one exudes when having menstrual cramps, and being grumpy (ill-tempered, irritable, grouchy) because of it: Grampy.
Example: Sorry I was so Grampy this morning, baby, but I have PMS, and my cramps are really bad today.
by Fatboy67 September 28, 2013
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A very rare mammoth found in the very anticipated game named 'The Elder Scrolls V: Skyrim' made by video game developers Bethesda.

In order to find this very rare character, you must do this by order: go to Windhelm then head south, then just past Kingsgrove there will be a small section with a pond--after you turn left which then you'll be encountered by a crazy tree named the Mammoth Elder Tree. That tree, by the way, is where the Grampy the Mammoth eats and makes a Kudacohiscouscis bow (otherwise known as the Kuda bow), the strongest and most rarest bow in the game as of date.

You will then be confronted with Grampy the Mammoth and keep in mind, this is a random event, so it may only work half of the time. If found, he will shit out the Kuda bow and then you can either kill him to start the Angel quest, which will lead to the Angel transformation, or let Grampy live so you may possibly find another-- which sells very high in stores.
-Hey dude, I found the best bow ever! The Daedric Bow! It's SOOO strong!
-Nah man, you NEED to find Grampy the Mammoth for the most MLG bow in the game, the Kuda bow!
by TheRondny101 November 22, 2011
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The male form of granny panties.

The said "grampy panties" are similar to tidy whities; the panty line is easily discerned through any loose clothing, like basketball shorts, especially if the clothing is a light color. They ride up and make uncomfortable and particulary ass-noying wedgies that, when picked, decrease the overall manly dignity to a measly amount.

Those who wear grampy panties are subject to immediate mockery when the panty line is spotted. If you are discovered as a grampy-wearer, head to the nearest bathroom and remove the grampies and place them in the toilet, so that no-one can make fun of you any longer. Just make sure your name is not written on the tag.
"Dang, check out his grampies!"

"NUMBER 7 IS SEEN SPORTING WHITE SHORTS, EMBARRASSINGLY REVEALING HIS EXTRA-LARGE GRAMPY PANTIES."
by Mury&Hanyah[[: October 20, 2009
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