Toledo Jackknife

When a male attmepts to fellate himself however the extreme angles involved cause him to throw his back out, and he is stuck in that position until help can arrive.

Hey, Steve got caught in a Toledo Jackknife, again.

by Benevir August 23, 2007

New Jersey Jackknife

When someone loses control of their car and bounces from wall to wall and back across to the other wall again.

Did you just see that Civic do the New Jersey Jackknife across the turnpike?

by LongIslandTom March 8, 2021

Missouri Jack Knife

When a person uses their busted teeth to cut someone during oral sex

I was getting head the other day and that bitch gave me a Missouri Jack Knife!

by loafnaround September 2, 2020

jack knife barber

A person who performs illegal abortions. This term is used in the Jethro Tull song "Cross-Eyed Mary," which is about a very young prostitute.
"She dines in Hampstead village on expense accounted gruel,
And the jack knife barber drops her off at school."

Mary had an unexpected surprise, so she paid a visit to the jack knife barber.

by mito0 October 12, 2008

jackanine

When a jackass pulls an asinine move.

the very act of his arrival, after having allienated everyone, was just jackanine.

by NKBrat March 7, 2008

JACK KNIFE TEA PARTY

Try this if your girl is really flexible!!This is done when you're standing up & having sex doggie style, your girl then procedes to bend further down & put your sack in her mouth for a tea bag!!

JACK KNIFE TEA PARTY IS DOGGY STYLE WITH A TWIST!!

by TANK & BIG BOSS May 1, 2009

Jacknine

A jackass who's acting assninel

He was being sarcastic and rude he's Jacknine

by Ljetwh75 May 2, 2018