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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."
by Aeromoe February 27, 2008
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Jun 23 Word of the Day
When a reply to a tweet gets more likes than the tweet it was replying to, usually indicating the unpopularity or stupidity of the original tweet
Damn you got 12 likes and his reply got 271 likes? He totally ratioed you bro
by FF29 July 06, 2020
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Orignally used to describe railbuffs, it now describes anyone who gets excited about something so much that they start foaming at the mouth.
Those geeks that play magic the gathering are foamers. They get so excited over one card that they start foaming at the mouth.
by Brent Higgins February 26, 2006
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Somebody who is obsessed with trains, may or may not work for the railroad. But they love trains so much they foam up in the mouth staring at trains, and jerk off with the foam.
Foamers: oh, you work for the railroad? I would have but didn’t send in a application, but I know everything about trains. I have a 64 track full model train set up through my house, I even sit on my lawn chair and stair at trains going by.

Normal railroad worker: wtf?
by Imnotthat_gaaaayyy June 07, 2018
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The type of n00b who would use derogatory rail slang like SCAXliner or Amtrash, complains about the tuning of train horns, tends to endanger his or other's lives for a good photo, and angers railroad crews through his actions.

Also tends to spam youtube haters' channels, and tend to harrangue people via internet, cell phone, etc.

G: Dude calm down, don't be such a foamer.

*cuts in front of parked train*
by AmtrakFan454 February 11, 2011
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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!
via giphy
by fc2078 October 28, 2020
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(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
by 901.lax January 06, 2020
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