Horizontal refreshment 

Getting laid, having sex.

John: Damn! Did you see that girl?
L: Yeah that thang swangin, I will go see if she is interested some horizontal refreshment.

Horizontal refreshment by Hell owe December 14, 2014

Horizontal stalactite 

Is the build up of semen on the rear divider of a desk. Overtime the dried semen forms a stalactite on the horizontal plane.

What is that under your desk Jimmy?
Oh that's just my horizontal stalactite Mum.

Horizontal stalactite by GDSS October 20, 2008

horizontal shit 

A shit that is horizontal.

A horizontal shit is essentially a turd that turned sideways while still inside the rectum, forcing it to come out horizontally, often rupturing the anus in the process. It often occurs when one has to keep themselves from defecating for extended periods of time.

"damn man, yesterday I had a horizontal shit so bad it made my ass look like the Japanese flag"

horizontal shit by LongWangChang September 3, 2016

horizontal tango

Another way of referring to sex.

Jack: Rachel and Zack are doing the 'horizontal tango'...

horizontal tango by JD UK January 29, 2006

horizontal ballroom dance 

The horizontal ballroom dance is similar to the horizontal mambo (sex) except it is a lot classier. Classy people perform in the act of horizontal ballroom dance. Aka classy people sex

Thomas H. wants to horizontal ballroom dance but he is a hodonk boy from the south so he can only horizontal square dance.

horizontal ballroom dance by Abear510 September 15, 2013

Horizontal Hunger 

worse than vertical hunger

Horizontal hunger is for GROMMETS.

Horizontal Hunger by swood dude November 5, 2018

horizontal bowl blaster 

A term used when one evacuates their bowels in a particularly furious manner, and in doing so gets fecal matter UNDERNEATH the toilet seat.

Man... Rufus just unleashed the horizontal bowl blaster and completely ravaged your toilet.

horizontal bowl blaster by Grubba November 2, 2003