foamer 

A person who is extremely obsessed with trains, usually they don't stop talking about it.

Person 1: Henry is such a foamer! He talks about trains all the time!
Person 2: I know right!

foamer by fc2078 October 28, 2020

Foamer 

A sacrilegious dumbass who simps over trains, more often than not, over a specific railroad or locomotive. A foamer is often ridiculously stupid and is really hard to argue with because they are so naive with the science and art behind railroading and only care about the trains they set eyes on.

Rail Enthusiast: "Damn that foamer foaming hard for some normal NS SD70ACe with the number 1111."
Another Rail Enthusiast: "Don't worry, I see foamers flipping out over an awful looking Caltrain f40ph with a shitty horn, and thats a normal for me."

Foamer by UnknownUser225 November 9, 2021

Foamer 

(n). A stereotypical fan who loves to make bias and make fake facts of said hobby. Generally, this term is used by anyone who’s overly obsessed with commonly seen trains. This term is also generally accepted in the bus and aviation community.

Oh my god, that kid really said that bus has a Cummins, but actually has a Detroit Diesel. That kid is a foamer

Foamer by 901.lax January 6, 2020

Foamer 

Someone who has an orgasm when they see a train.

Calm down foamer its a train, pls don't cum

Foamer by Ohjgnmihh June 27, 2022

Foamer 

A person who stands by railroad tracks and films or takes pictures of trains

Look there is a foamer over there

Foamer by TwistedXLCyclone July 6, 2021

foamer 

Used by professionals in the theme-park industry to describe hard-core fans of theme parks, amusement parks, and attractions.

As a fan base, they get so excited about something that they start foaming at the mouth.

Those foamers over at the MousePlanet discussion boards are freaking out about the latest Epcot rumors.

foamer by eticket October 15, 2010

Foamer 

An adjective used to describe certain rail enthusiasts that think every old EMU / DMU / Diesel Locomotive / Electric Locomotive are better then any and ever new train that is built They also climax at the any sort of thrash or horn they get.
You can spot a foamer by what they were or what they carry
they usually have an iPad and a tripod or some shitty camera and are aged between 16 - 150 years old

Person 1: The Class 319 is a good train and the Class 700 is a crap train
Person 2: God you are such a foamer, the Class 319s are awful.

Foamer by Mr ScoutZz[OBJ] November 15, 2020