Concrete Sex 

Concrete sex is when a man is giving anal and knocks the person receiving the anal out. As they have knocked them out the muscles in the anus grow tight and trap your penis inside the anus until the receiving person wake up.

I was having Concrete Sex with jenny the other day and I knocked her out cold for 30mins. Mate my dick went numb

Concrete Sex by Calhayes1 May 10, 2014

concrete stiffy 

A very hard erection of lasting duration.

She teased me to extremes, my prime boner was a concrete stiffy!

concrete stiffy by little miss perky February 10, 2009

Concrete Slab 

When your HIGH AS FUCK at Barnhart at the University of Oregon at midnight and you think that a river is a solid piece of concrete...

me: ayo Dalen go do a backflip onto the concrete slab
Dalen: say less

Concrete Slab by concrete slab November 2, 2021

concrete shoes 

A method of human disposal, developed and perfected by the Italian mob. Involves encasing a person's feet in poured concrete, and dumping them, alive or dead, into a deep body of water.

"Luco Brata sleeps with the fishes. We just fitted him for concrete shoes."

concrete shoes by D. Gould February 9, 2006

concrete surfing 

surfing on concrete aka skateboarding or longboarding.

Wanna go concrete surfin?
wtf is concrete surfing?
skating brah!

concrete surfing by hipxpxixe April 16, 2016

Concrete Slappers 

A pair of large, flat, durable feet, ideal for walking barefoot on concrete, making a slapping noise.

I used to think Gary was a fuckin' idiot walkin' barefoot, you know, like he wanted to get tetanus or something, but I saw his feet, and he's got some concrete slappers.

Concrete Slappers by human fucking garbage October 22, 2022

Concrete Shit Mixer 

To hold a shit in all day, forcing the stomach to roll it in a tightly packed cinder block and having to force it out with a jack hammer.

Christian, I have to shit so bad but I think I can hold it in until I get off work.

You better not Nick, because you'll be stopped like a concrete shit mixer!!

Concrete Shit Mixer by DeezzzzzzNuts January 9, 2015