Filly Train Ride 

When a guy cums in a girl after doggie style sex, he keeps his cock in her and they walk as a team to the bathroom so the cum doesn't leak all over the bed sheets. The penis keeps the cum in the pussy while the legs operate the train.

Jen: Oh my god, that is so much cum, I just changed my bed sheets!

Joe: No worries babe, I'll give you a Filly Train Ride.

Filly Train Ride by Filly Train Ride June 25, 2014

Filly Fooler 

Commonly used in My Little Pony: Friendship is Magic fanfictions. A Filly Fooler is a pony that is attracted to the same gender.

In FlutterDash shippings Rainbow Dash and Fluttershy are depicted as Filly Foolers

Filly Fooler by EpicDash377 March 2, 2015

silly filly 

A purposeless interpretive dance involving finger-to-cheek pokes done by girls. This dance is aimed to further prove the dancers' inane and insignificant existence. It is uselessness at its worst.

Girl 1: Uhh, uhh break it down! Silly it, filly it!
Girl 2: Silly filly!!!!!
Girl 1: Bob! Do the silly filly!
Bob: (walks away)

silly filly by headbandgirls June 30, 2009

silly filly 

A dance done by stupid girls which involves one finger poking the left side of face and another finger poking right side of face while simultaneously screaming "Silly! Filly!" in a high-pitched shrill voice. Usually done by people with the need to advertise their stupidity.

girl one: "OMG!" A bird!
girl two: "This calls for the Silly Filly!"

silly filly by alienhead99 June 28, 2009

fillyfooler 

A mare who is attracted to other mares.

Rainbow Dash is very likely a fillyfooler.

fillyfooler by A_Random_Brony May 7, 2011

filly 

a girl, chixor, chick, lady, female

man i wana get down with that filly

filly by lumberjack September 24, 2003

Bucking Filly 

The art of fucking a girl from behind (vaginally) and then pulling out and forcefully sticking it in her ass thus causing her to kick backwards in a bucking fashion. The bucking will normally be in the old nutsack area which may be pleasureable to some men.

I've always wanted to date an equestrian, but I am afraid she may be a bucking filly.

Bucking Filly by Two Girls One Cup December 21, 2009