Archback

A woman who arches her back rather than sticking her bum in the air whilst being shagged from behind.

I'd rather make my own sandwiches than go for a ride on an archback.

Archback by Jimmephray June 9, 2015

Arch Back Fanny Girl 

A Female that has her vagina positioned further back towards her bum. These females generally have the sexiest body. Furthermore these females are the best to have Doggy Style sex with.

Kam: Oh my god, check that girl out!

Carl: That's a Arch Back Fanny Girl right there!

Arch Back Fanny Girl by ArchBackFannyGirlLover July 17, 2011

Arch back 

A flat girl who arch's her back to make herself look thiccc

"Look at that mirror pic Emilee took, she's such an arch back"

Arch back by Hailayeeeee September 14, 2019