A grundy that creeps forward to encompasses the vagina, resulting in a cunt grundy, or "crundy."
"Ryan gave Amy the most wicked crundy I've ever seen."
by GreekDutchman April 29, 2008
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Crundies are undies that are crusty from dried up semen usually from masturbation ejaculating into the underwear and leaving it there to dry. Crusty+Undies=Crundies.
The boy had dirty crundies in his room. Disgusting!”
by ZuccGod November 19, 2018
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A grundy that creeps forward to encompasses the vagina, resulting in a cunt grundy, or "crundy."
"Ryan gave Amy the most wicked crundy I've ever seen."
by GreekDutchman April 29, 2008
Get the crundy mug.
Worn or dirty underpants usually with stains
His filthy crundies were left on the bedroom floor
by DawnishPastie September 29, 2021
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When your little sister is has her legs and arms both in the sleeves of her hoodie and running around the house dancing like in the "wow you can really dance" tiktok dance/challenge
My sister was running around in crundie mode and letting out her gas
by Norris nuts fan July 9, 2021
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