RFILF 

Roid Freak I'd Like to Fuck.

"OMG! Did you just see that RFILF? If only he didn't have such a small penis....."

RFILF by Daniel Maher February 3, 2008

Railfan 

A word used to describe someone that films trains. It is not a job, it’s a hobby that anyone can do. It doesn’t matter what, at what time, when, and where you railfan, as long as you enjoy it. Anyone can become a railfan if they want. It doesn’t matter what device you use to film trains

John is a railfan that always goes to a train station near him.

Railfan by nothingmuch_ October 31, 2018

Railfan 

Person who gets over come with excitement whenever a train is near.

There was a railfan foaming over the U26C

Railfan by David Maciulaitis July 30, 2003

Railfan 

A person involved in a hobby who appreciate the many aspects of railroading through observation, the use of the arts, education, prototype modeling and/or railroad employment. For more information, see www.mickinspiration.com/allabouttrains.html

Many railfans turned out to watch an old steam engine come to life.

Railfan by Michael Mickens April 15, 2004

RILF

Retard I'd like to fuck.
This word is largely associated with hot girls who aren't very smart. Also can be used as the term 'bimbo'

Dude; Did you see that chick? She's a total RILF!

RILF by sweething321 October 12, 2011

RILF

Redhead I'd Like to Fuck

Alyson Hannigan, Kate Walsh, Laura Prepon, Lindsay Lohan sometimes, The Little Mermaid...They're all bigtime RILF

RILF by thisiswhyimhot78 March 18, 2009

rilf

Russian I would like to fuck.

He's/She's definitely a rilf!

rilf by communist~_~ April 6, 2010