What one gets when giving a blow job while kneeling on the carpet. The knees get dry/ashy and impressed with the carpet weave pattern. Not as serious as rug burns.
Rom: Hey what did you do for lunch today?

Gina: Just look - I hooked up with Dave and got a serious case of carpet knees!
by Kohlsong August 28, 2007
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What one gets when giving a blow job while kneeling on the carpet. The knees get dry/ashy and impressed with the carpet weave pattern. Not as serious as rug burns.
Rom: Hey what did you do for lunch today?

Gina: Just look - I hooked up with Dave and got a serious case of carpet knees!
by Kohlsong August 14, 2007
Get the carpet knees mug.