Core Sample 

When you are skull-fucking someone whose brain is intact and dig out cylindrical holes in their brain.

I gouged out Bryan's eye and then took some core samples. It was quite delightful scraping chunks of his brain off my dick.

I gave Bryan a pretty serious white matter infusion while taking a core sample.

Core Sample by DVJ February 4, 2014

core sample 

The act of sticking your finger up your own ass to gather a small amount of feces, then quickly administering it in an unsuspecting persons mouth. Think of a wet willy.

Last night I was fuckin' my bitch, then i gave her the ole' core sample. Bitch got pissed.

core sample by Sampson Antfarm April 24, 2008

core sample 

When a guy pops his lover in the backdoor while the chili chute is full, then tries to take a piss afterwards forcing a thin rod of fecal matter to be ejected from the penis

Before Roy could go to the bathroom, Siegfried bent him over and took a core sample.

core sample by W.E. Coyote August 20, 2003

Core Sample 

When you go so deep during anal you pull out turdlett

Jersey girl and I went back door last night. Totally took a core sample.

Core Sample by Arbarth June 15, 2015

Grey Matter Core Sample 

drilling a hole in someones skull and fucking their brains out.

well Lary i guess im going to have to give your wife a grey matter core sample for letting Fluffy crap on my lawn again!

Grey Matter Core Sample by wetspongecrosscountry October 20, 2010

African core sample 

When you are clapping that ass and go to bust on her chest, but just push out a core of poop out of your urethra that you just jackhammered back into her small intestine.

She asked me to get her and African core sample to study. After a good struggle fuck, I shot one right on her reading classes.

African core sample by Thunderdaddy May 9, 2021