Flintstone 

Tongue piercing with a barbell.

Suzy: I'm going to have to eat pudding for a few days. I'm getting a flintstone tonight.

Bob: Yeah, you and everybody else. Your tongue's going to swell up like a tennis ball.

Flintstone by Lane August 3, 2004

Flintstone 

The act of messing something up so bad to the point that it can never be fixed, such as a measurement, relationship, etc.

Awww fuck... I flintstoned it.

Flintstone by Rock_You November 11, 2007

Flintstone 

A term used to describe a soccer ball that is over inflated, and furthermore the act of heading such a ball. Typically dreaded and quite painful on behalf of the recipient.

Friend 1: "That ball's mad hard!"
Friend 2: "Yep, its a flintstone."

Flintstone by mf21 November 8, 2017

flintstone's gummies 

literally the best fucking gummies to ever fucking exist

bruh Flintstone's gummies smack

flintstone's gummies by thefuckingshit.com June 25, 2020

Flintstone feet

Large, thick, wide feet that look even bigger when a person is barefoot or wearing sandals. feet, foot, Flintstones, cartoon, bigfoot, sasquatch feet

Did you see that guy's Flintstone feet, he must have his shoes made.

Flintstone feet by joecoolthefool May 19, 2016

Flintstone Feet

Having large, flat and basically impervious feet that can be used to walk on anything, stomp out fires or stop cars.

" why didn't you tell me there was rocks in the back yard? I walked on that without my shoes!"

" Rocks?"

" Oh, I forgot you have Flintstone Feet"

Flintstone Feet by Briesie July 20, 2014

Flintstone Friend 

A person you are friends with in real life, but are not friends with on Facebook.

I don't want them to see my profile, that's why they're a Flintstone Friend.

Flintstone Friend by rheniumoxide February 9, 2015