Coltrain 

Another word for noob or hardtard (or ardtard).

Well I think we know who the new Coltrain of the group is...

How did you drop that pass?! That was such a Coltrain move.

Coltrain by Dommerlodeon November 11, 2006

John Coltrane 

Quite possible one of the best jazz musicians ever. Played with miles and McCoy Tyner.

Start out with blue trane.

John Coltrane by 10 December 26, 2004

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 

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 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

coptrain

The long line of automobiles driving down the road behind a cop due to the person at the front of the line being too scared to go faster than the cop.

I'll be a few minute's late, I'm at the caboose end of a coptrain right now.

coptrain by Dexi September 11, 2009

contraindicate 

con·tra·in·di·cate -cat·ed, -cat·ing.
–verb (used with object), Medicine/Medical.
to give indication against the advisability of (a particular or usual remedy or treatment).

[Origin: 1660–70; prob. back formation from contraindication.

Probable mucosal damge may contraindicatethe use of gastral lavage

contraindicate by Troy D. F. December 28, 2007