When a girl is riding/fucking her boyfriend on the couch while they watch National Lampoon's Christmas Vacation and her dog starts to lick her ass.
I was watching Christmas Vacation and my girl's dog totally gave her a Dirty Griswold.
by DirdieBirdie December 6, 2016
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Taken from the National Lampoon Christmas Vacation movie.

(Noun) - Someone who gets possessed by the Christmas Spirit and enjoys it a little too much

(Verb) - its the act of getting way too into Christmas, including decorating your house in an obscenely obnoxious way or traveling out to the middle of no-where to cut down an oversized Christmas tree.
John realized he went Clark Griswold on his house when he could see the lights from across town.
by mildmanneredclarkkent December 1, 2009
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A major oversight or obvious err in judgement or planning. As in the movie National Lampoon's Vacation, the Griswold family drives cross-country to Wally World theme park to find that it was closed. Or, failing to see an obvious easier route, short-cut, shorter line or less crowded approach to anything while preoccupied following the masses. "Stupid tourist, sheep, rookie mistake".
After spending nearly an hour looking for parking, Ves realized his Griswold mistake of shopping at the mall on the weekend.
by moreflare April 2, 2012
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Usually a white kid with a jew-fro, most of the time an ignorant asshole when around girls. Talks very little, and always very awkward. Also, he is usually into the gayest sport in the world; baseball.. ALso he wears shorts too small for him.
Ew! Look, there is a Zac Griswold coming this way! What a faggot.
by the real chick January 3, 2012
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To attach a large amount of electric Christmas lights to the exterior of your home. Derived from Clark Griswold, the expert of exterior illumination.
"DAMN. My next-door-neighbor has done Gone Griswold all over the outside of his freakin' crib!!"
by Cousin Eddie Johnson December 20, 2009
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Decorating your house over the top while making your neighbors hate you.
Man did you see the Smith's house that guys going Griswold!
by Griswold29 December 1, 2013
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Frightening, hellish, prison like location (Enter at your own risk)
I heard they call the police on 12 year olds at Griswold High Schools! WOWSER!
by Walter Branson ;) May 6, 2019
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