Furtleneck 

Hair around the neck, much like a turtle neck, but made of fur

My dog has a furtleneck

Furtleneck by Stephanie89 June 18, 2008

Turtleneck Butt 

Something you Googled after watching Big Mouth Season 4 Episode 3

Andrew: "According to WebMD I have turtleneck butt.

Turtleneck Butt by This is what you get December 17, 2020

turtleneck butt 

When you go a month without pooping, and the turd is so huge it stretches you hole so far that afterwards it hangs down loose like the collar of a turtleneck sweater.

I went to camp and couldn't poop for a month. When i finally did, it stretched my asshole out so badly now I've got turtleneck butt.

turtleneck butt by TenhoSede December 7, 2020

Fuckleneck 

Also known as fuck knuckle. When you're so fucking stupid knucklehead won't describe you. A complete and total dumbass.

That fuckleneck got arrested again.

Why do people fuck up and marry fucklenecks named Brandon or Jeffery?

That fuckleneck needs to be slapped.

Fuckleneck by Craci July 26, 2017

Turtleneck Sweater 

(n.) A strategically designed sweater that has a piece of fabric at the top which hugs fabric completely around the neck. Mostly worn more recently by snobby artists (usually accompanied by a beret also black) or mom's over 35. However, the sweater originated to solve an age old problem of hiding hickeys. The neck is one of the most common places for visible hickeys to appear after a passionate make out session. The next day when you have to have dinner with you parents (or maybe even grandparents!) the hickey will make them think you are some kind of sex fiend. A fashion designer had this problem and after realizing all of their scarves were dirty (don't ask, that is more sex fiend stuff) quickly sewed extra fabric on top of an old sweater to completely conceal around the neck and thus the hickeys. Now men and women can wear hickeys around their families and everyone will think they just have no fashion sense.

Girl: "Tomorrow I have to spend Christmas visiting relatives."

Guy: "So no Chistmas Eve necking then?"

Girl: "Oh we totally can neck all night, I have an ugly Turtleneck Sweater I can wear!"

Turtleneck Sweater by Kangarilla September 30, 2014

Swiss Turtleneck 

The act of a man's head being placed between two sets of large breasts so that the breasts form a "turtleneck" around the man's neck.

Brandon: "Dude, i got the two Emily's to give me a Swiss Turtleneck!"

Blake: "Nice!"

Swiss Turtleneck by Big Choctaw July 9, 2010

one-eyed night-crawler w/ turtleneck 

Covert expression for the male (possibly uncircumcised) sexual tool.
see: one eyed trouser trout

His best catches were when he used his one-eyed night-crawler-with-a-turtleneck as bait.

one-eyed night-crawler w/ turtleneck by sonni hopkins September 7, 2005