Shintercourse 

Similar to sexual intercourse, but only involves the shins of both parties involved. Any contact with any body part other than the shin renders said shintercourse as void.

Jenny and I had some sweet shintercourse last night, so we didn't lose our virginity or get any STDs!

Robbie and I tried to have shintercourse last night, but our knees touched, so it was technically just sex.

Shintercourse by TrakPak February 28, 2017

Shintercourse 

When one uses their own shins to create sexual arousal/ spark orgasm, such as rubbing the genitals with the shin to result in climax.

Dude, rub your shin down my thick crease, I require shintercourse.

Shintercourse by Butter on a Stick is back July 14, 2020

Sexual Shittercourse 

When you slide your own stool in & out of your own butt hole it does not count as self anal sex. But it counts as Sexual Shittercourse. That is lowest form of anal masturbation you can ever do in your life while going number 2.

You done fucked yourself with your own shit? Fucking weirdo!

Hey look! That person had sex with his own Spaghetti!

Did you bother to wipe after having sexual shittercourse?

Why the fuck do you get off to that?

The bigger the stool, the tougher of the pull.

Sexual Shittercourse by Howard Stern Number 1 July 7, 2021

Splintercourse 

The act of having intercourse on an unfinished wooden surface.

Last night Richard and I had awesome splintercourse on the edge of his wooden hot tub...ouch. Do you have any tweezers?

Splintercourse by Deirdre (DeDe) Daniels February 18, 2009

Chintercourse 

The process of having sexual intercourse while utilizing a strap-on dildo affixed to one's chin - otherwise known as a chindo or chin-do.

Dude, I was having chintercourse with my chick last night. Chintercourse is so much more fun than regular intercourse - I get such a better view of her meat curtains!

Chintercourse by Meat Curtains 4 Ever May 7, 2010

squintercourse 

Squintercourse is two people with bad eyesight doing the wild thing.

Pasquale: So how did your night with Debbi go?

Enrico: We both took off our glasses and it turned into a total squintercourse.

I believe at one point I was boffing her bellybutton.

Pasquale: Yikes!

squintercourse by scodder November 6, 2012

Chintercourse 

Chintercourse is when fat and chubby people have sexual intercouse!

Watching chintercourse porn grosses me out!

Chintercourse by Spencer Deane June 29, 2008