Foamer 

A term railroad employees use to describe a railroad enthusiast / railfan and the railfan community at large. Most often used disparagingly.

(Engineer to conductor aboard a freight train)

"Man, we got some foamers ahead taking pictures...they need to just get a life and find something to do besides hang around the tracks all day."

Foamer by Aeromoe February 28, 2008

foaming at the dick 

When a man is super horny

Man she is so hot I am foaming at the dick

foaming at the dick by tunazz June 11, 2008

Foamer Simpson 

When a Beer is poured or cracked and foams at the top.

JC cracked a Bapple and the foam came rose out of the can. “JC bro you got a foamer Simpson.”

Foamer Simpson by Foamer Simpson January 10, 2023

Foamer 

The rail fan's equivalent of weeaboo, derived from foaming at the mouth at the sight of some trains

Foamer: zOmG tHaT's A uNiOn PaCiFiC DD40XX
Honest rail fan: fuckin' foamers...

Foamer by CaptainOppai November 12, 2021

Foagmiester 

Noun

A habitually cautious youngster.

Ethan, you foagmiester! You always find some excuse to stay home!

Foagmiester by Kantewanto8998 January 3, 2016

Foamer 

Someone who loses their mind over any train, usually a rail fanner or train buff. Most of the time they show no regard for their surroundings or to anyone really.

OMG, that foamer is so annoying! He's always yelling at the train station when a train passes by and throwing garbage on the tracks! GO LOOSE YOUR DICK SOMEWHERE ELSE

Foamer by EL SEXO GRATIS October 3, 2023

Caltrain foamer 

Someone who foams hard over Caltrain. They usually live in Redwood City California and will go as far as to tell someone to end their life for not liking Caltrain or threaten to sue Caltrain for retiring their F40ph fleet.

A Caltrain foamer argues with someone saying Caltrain is the worlds best railroad

Caltrain foamer by JulianRailroad November 3, 2021