A foamer for the commuter railroad Caltrain who usually lives in Redwood City California though two notorious Caltrain simps live in Oklahoma and Florida
example: The Caltrain simps line up at the platform to scream over Caltrain 914

Foamer (n.): a person who can't communicate with anyone, without going off about how Trump is (saving/destroying) our nation, who's oppressed (or privileged) or an issue that is so f*cking important nobody should do ANYTHING until it's remedied to the foamer's satisfaction.

the act of receiving oral sex or a "domer" while having laundry detergent and water lathered on to the male counterparts penis, followed by the female counterpart giving the oral sex or "domer"

Dribbly Foamer Cunt

A deeply disturbed and perverted gunzel couple who like to engage in the practice of jacking off into the tailpipes of white cuntmobiles. This is so they can mix their fluid with the essence of petrol and enjoy a juicy dessert after dinner. They use the concoction as mouth wash but because there is no actual saltwater present, their sore throats remain overused. They wish buses had tailpipes, but they will take what they can get.

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

Someone on drugs with white buildup around mouth

One who is consumed by the Fear Of Missing Out.