Fastback 

A modern term for the word rewind because we don’t use VHS any more.

Aw man I missed the fight! Can you fastback?
Sure the fight was pretty cool anyway.

Fastback by Wclyon953 November 15, 2020

1969 Mustang Fastback 

Car driven by old men that think they are still cool. More then likely also have beat up Harley of some sort. The car will usually smell like bacon or jalapenos. The reason for this is still unknown.

"Hey look at that moron over there." "Wow! He must drive a 1969 Mustang Fastback."

1969 Mustang Fastback by The One and Only Chosen One June 9, 2009

fatback chopper 

Cleaving the buttocks in twain. Similar to a danza slap right along the buttcrack.

The bitch didn't like it in the ass so I had to teach her what's what with a Fatback Chopper.

fatback chopper by BUNNe's Sister, BUNNe, and an honorable mention to Wotan July 28, 2008

Fastrack Wanker 

Someone who purchases and uses fastrack tickets to beat the queues at theme parks.

Have you only just come out of the ride? It's been ages!

I know. There were so many fastrack wankers going in before us.

The queue is really long. We should probably fastrack it.

But we don't want to be fastrack wankers!

Fastrack Wanker by BLNTSVRT October 28, 2011

Dirty FastJack 

When you’re playing Xbox and you kill somebody and they spawn behind you and start fucking you with a used sock and then finish in both of your ears. Then they will keep fucking your mouth until the semen in your ears comes out of your mouth

Wow a dirty FastJack gets after it

Dirty FastJack by Benny157383 January 12, 2023

fatback 

Late 60's, early 70's style funk rhythm guitar, often accomplished using a wah pedal and 9th chords. Listen to the theme of "Shaft."

That dude's layin down some bad-ass fatback.

fatback by Andy December 26, 2003

fatback 

A term of utmost hatred used to define someone with a weight problem; this term should not be used in reference to someone who could kick your ass, only in situations where the fatass is totally immobile or just a pussy.

Hateful Person: Put those Cheetos down you fucking fatback
Fatback: Dude, I'd hit you if I could get up off this bed.
Hateful Person: Yeah, you're fuckin-a right you grotesque fatback mother-fucker.

fatback by Raagers October 18, 2004