Caltrain 

Some jackass railroad in the San Francisco area that some railfans mega simp for. In fact, the railroad doesn't even simp as much for itself.

Example
Caltrain Simps line up at the station to foam for F40PH-2CAT 914.

Caltrain by JulianRailroad October 14, 2021

caltrain 

Caltrain is a commuter rail service that operates in San Francisco (4th and King), through San Mateo County and down to Santa Clara County (Gilroy). Started in 1987, and powered by diesel (though in the process of electrification). There is also a Baby Bullet service which stops at limited stations to cut down commute time. It has transfer stations at 4th and King to Muni (also conveniently located next to Telephone Park), Millbrae to BART (also to SFO), Mountain View to VTA, Santa Clara to Amtrak, and San Jose Diridon to ACE and Amtrak.

New projects include: the underground extension from downtown San Francisco to the future Transbay Terminal, Dumbarton Bridge rail to the East Bay, and a proposed extension to Monterey County.

Knights of Columbus! I just missed the train! Now I have to wait another hour to wait for the next one to arrive. DAMN YOU CALTRAIN!!!

caltrain by bayareaninja November 15, 2006

Caltrain 

A train line that went (mostly) electric on September 21st, 2024.
According to a plaque at one of its own stations, it is the oldest continuously operating railroad west of the Mississippi.
It is fun.

Caltrain is fun to ride

Caltrain by person@person July 3, 2025

Caltrain Simp 

A simp for Caltrain, usually pretty stupid.

Metra Person: Fuck Caltrain Simps!

Some other train person: I agree with this statement.

Caltrain Simp by Caltrain Sucks February 23, 2021

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

Caltrain 921

Some stupid ass Caltrain F40 thing with has a cab mounted headlight as opposed to nose mounted, it also has the worst horn in history

Caltrain simp: “LOOK, IT’S CALTRAIN 921, THE GOOOOOOOOSE!!!!!!”

A cultured railfanner: “No, it’s awful”

Caltrain 921 by JulianRailroad October 13, 2021

Caltransing 

Sitting around, wasting time and doing nothing. Derived from the fact that Caltrans (California's department of transportation) construction projects take much longer than expected, go over budget, and cause needless congestion.

Joe: *sitting in his office chair and doing nothing"
Steve: Why aren't you working on our group project? Stop Caltransing

Joe: I'm recovering from my 45 minute commute. It was 20 minutes before Caltrans started their stupid freeway widening project.

Caltransing by Four Loko Frat Guy June 16, 2023