rain train 

Cumming on somebody, preferably in their eyes .originates from the the saying "to run a train on somebody"

"Hey dude you pulled a rain train on her."
"Thanks bro, I've been practicing

rain train by I did it! July 11, 2015

Rain Train 

Call of Duty zombies where you make a whole bunch of zombies chase you and then you shoot them.

oh my god Josh and Ryan are gonna get rain trained

Rain Train by Starfire4206969 January 10, 2021

taint rain 

The sweat that runs down the inside of your legs on hot/humid days.

Todays forecast 100% chance of taint rain

taint rain by baconbyts May 19, 2017

Can't rain all the time 

A phrase that is spoken in the movie The Crow. It means that even in the darkest of times light will eventually find its way through. Usually spoken in an optimistic tone of voice to shed some hope on something/someone.

It can't rain all the time..

Can't rain all the time by iwannabeanalcoholic April 23, 2005

Raingraine

Headaches caused by changes in the weather or barometric pressure, specifically rain

Today I had the worst raingraine.

Raingraine by T Win February 4, 2022