knuckles deep 

A form of measurement used to determine the size or width of a vagina or anus, or the act of inserting fingers into said orifices. Preceded by a number which indicates how many knuckles.

---It still has not been determined if fisting someone is considered 4 or 5 knuckles deep, as the debate contiunes if the thumb counts as a knuckle

"So last night I was two knuckles deep in this chick's ass..."

"Her pussy was three knuckles deep--pretty impressive."

knuckles deep by Kevin Kugler March 11, 2006

Knuckles Deep 

A term to describe how much of a finger (or fingers) length is inserted into a persons nose; whilst they are picking a booger out of it.
Usually just the tip of the finger is used; but is someone is really going after the gold; they will be 'knuckles deep'.

"Damn, that bum was knuckles deep in his nose"

Knuckles Deep by Tyler Turden3 December 9, 2008

3 knuckles deep stirring the soup 

To finger fuck a girl, using several fingers at the same time. Usually implying the girl is very arroused.

"That chick is so damn hot! I'd love to be 3 knuckles deep stirring the soup!"

3 knuckles deep stirring the soup by FA Double D December 25, 2008

four knuckles deep 

When you head over to your friends moms house and ass bang her until your friend walks in on you

Yo yo I was four knuckles deep in Garys mom last night

four knuckles deep by Daddio123 March 7, 2016

two knuckles deep 

Two knuckles deep refers to somebody who is digging for nose boogers while face to face with someone or a group of people, not hiding the event, letting everybody see the activity.

Victoria: Did you see that?!? Chad just went two knuckles deep!
Steve: Two knuckles deep?
Victoria: Yeah! He was digging for nose boogers right in front of us!

two knuckles deep by DeeQue November 8, 2014

knuckle-deep in schlicking

Medical term for wanking like a motherfing pro!

when i was like 14, our family maid had found porn on my younger brothers computer (he was like 12, and totally inept...he actually kept the thumbnails of the porn he liked on his desktop...like no one could see it -.-) anyway, the maid told my mom and step dad about it, and later that night they decided they should check my computer out. of course, as they came in to check my computer, i was knuckle-deep in schlicking myself. needless to say, they found the porn i had...

knuckle-deep in schlicking by IrapedCharmander October 3, 2011

knuckle deep 

The act of using fingers to pleasure a female vagina and/or clit.

I drive my girlfriend crazy by shoving my tounge down her throat and going knuckle deep.

knuckle deep by Andy Holman October 11, 2005