Flintstone, the 

When some one sticks their toe into another's ass, then fucks them with it and/or wiggle's it around inside their poo-shoot.

I was watchin' this porno, and these two girls Flinstoned each other. I think one of them yelled, "Yabba Dabba Doo!"

Flintstone, the by Hrny Devil July 16, 2003

the Flintstone cut 

A very large prime rib or any large steak.

We went to a steak place on Friday. My date went for the queen's cut, but I got the Flintstone cut.

the Flintstone cut by brighton71 October 21, 2007

The Flintstones Treatment 

When one sends another man to a girl's house for some birthday sex and a viewing of Flintstones in Viva Rock Vegas, and when the guy gets there, the girl is sleeping and doesn't know why he's there.

Pat: Hey Alec, did you get together with Sydney last night for some birthday sex?
Alec: Nah man, I got the Flintstones Treatment...

The Flintstones Treatment by Themanof July 8, 2017

the flinstones 

The Flinstones is a really old show from the caveman times where they watched it in comic books by rock. eating rock cereal.

-Hey remember the flinstones?
-Uhh, that was in caveman times

the flinstones by DaTurtle April 19, 2018

the "Fred Flinstone" 

The act of penetrating from the rear, her legs being wrapped around your waist, she is holding herself off the ground with her hands, all while simultaneously moving forward with you in a very "cave man," Fred Flinstone Mobil type fashion; all while shouting "Yaaba Daaba Doo!"

I knew the very moment I met you, that we were destined to do the "Fred Flinstone" with each other.

the "Fred Flinstone" by major tom on your mom March 5, 2009

The Fred Flinstone

Noun:
A finishing move performed by a male. When he cums, he yells at the top of his lungs "yaba daba doooooo" and cums on his partner. The louder the better.

*guy pumps very hard*
"I'm about to... yaba daba dooooooo!!!!"

"Did you just use the Fred flinstone on me?"

The Fred Flinstone by TheWeekndsk8 January 16, 2017