When the male member retreats from the outside of the body to the inside, much like a turtle does with its neck and head.
my nude modeling opp took a turn for the worst when i looked down to find i was turtle necking.

I was a proud man when i ripped off my swim trunks at the party but after laughs emerged i had to exclaim "pool water makes me turtle neck"!
by middlemansamiam June 28, 2011
Top Definition
Your dick when it's covered by the foreskin.
My turtle head came out when I got horny.
by Kurt91 June 09, 2004
A word used to describe an uncircumsized penis.
"Somebody's wearing a turtleneck."
by Rachaelmalice April 10, 2010
when you pull the foreskin down below the head of the penis
before i could blow him, i gave him a turtle neck.
by pappapittmudman February 03, 2004
A type of sweater with a long neck, preferably worn with a thin chain and light beer in hand.
Turtleneck and Chain and a light ass beer. -The Lonely Island
by Mattwood646 May 11, 2011
An Uncut Dick
Ashley: Chris forgot to wash his turtleneck
by jonfizzle November 13, 2003
the foreskin(euphemistic)
Be gentle with your turtleneck.
by The Return of Light Joker August 16, 2008
To deliberately and surreptitiously cause defect to a prophylactic with the aspiration to impregnate or be impregnated as a result of ulterior motives.
Freg: Hey Sturbs, did you hear Hobbie knocked up Waura?
Hason: No way! What are they going to do?
Freg: Well, I think her family has crazy money.
Hason: That turtlenecking sonofabitch!
by Greggo Antony Bater March 04, 2010

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