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.
by eticket October 12, 2010
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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.
by Mr ScoutZz[OBJ] November 15, 2020
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(1) One who talks alot of non-sense and completely lies about something or someone. (hense having foam in ones mouth and not being able to understand them)

(2) An asshole who says something about someone but doesn't have the courage to back it up.
(1)Dude, He's such a foamer hes choking himself.
(2)He talked shit and didn't even show up for the fight, what a foamer.
by Snwpaint32 June 15, 2007
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Somebody who has uncontrollable fits of rage who is usually a quite and introverted person. Possibly the result of Asperger syndrome or poor social skills a foamer is not in control of there emotions when in a stressful situation and they are often considered social rejects by some.
Chad- “what are you doing bro!!!”
Foamer - “leave me alone I’m doing revision
Chad- “your a nerd bro”
Foamer “fuck off (attacks Chad)”
by Nerd crushed June 18, 2021
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When a male's penis is not erect, but completely down either. Usually occurs in between the two. (See also: Chubby)
<Girl> Wow! Peter has a huge cock!
<Guy> Nah, it's just a foamer.
by p-viddy April 21, 2004
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Derrogatory term used by surfers to describe bodyboarders, in reference to the fact that body boards are constructed of foam.
by Capt. America is Dead August 26, 2009
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