cumtrain 

When a man cums on a girl's ass crack so that it trickles down into another girl's mouth.

Guy: Here comes the cumtrain!
Girl: It better not be late like last time.

cumtrain by Crazyfool99 August 27, 2008

cumtrain 

Cumtrain is a horny slut who has sex a lot and with lots of make-up.

-Dude... I just met the biggest cumtrain ever.

-REALLY?!

cumtrain by b3taisnotacumtrain September 23, 2021

Cumbrain 

A person obsessed with sex to the point where it becomes a detriment to their abilities to socialize and think through problems.

Mike keeps flirting with every girl he meets like a fucking cumbrain.

Cumbrain by Balanced Breakfast January 15, 2019

cumbrain 

Someone who thinks almost exclusively with their dick (or vagina) and goes on and on about porn and anime tiddies to the point of being annoying. Might also be an incel. Should probably have sex and stop watching so much porn so they can stop obsessing over it. Will likely argue that being interested in sex is natural or some bullshit, ignoring the fact that fapping 5 times a day isn't normal at all.

Person 1: What's your favorite Metroid game?
Person 2: For me, it's Samus. I WANNA FUCK SAMUS I WANNA FUCK THAT GAP IN HER THIGH WHEN SHE HAS HER SUIT ON AGGGHHHHH I WANT HER TO SUFFOCATE ME WITH HER TITS MOMMY MOMMY I WANT MILKIES RAGHGAHGAHGA I WANT A GF I WANT A GF GAHRUAWIGHAUHD
Person 3: Settle down, cumbrain

cumbrain by ebinvirgin August 1, 2019

cumbrain 

someone who is overly addicted to pornography and/or masturbation. the name has been originated and gained some popularity from 4chan.

person #1: “have you seen person #3? i didn’t find him at school today.”

person #2: “he’s probably at home watching porn as usual.”

person #1 “why does he never do anything but watch porn? he’s such a cumbrain..”

cumbrain by zaitra January 6, 2021

cumtrails 

When a navy pilot (aviator) uses the high altitude combination of jet exhaust and water particles to form ice crystals in the shape of male genitalia

I was walking around Oregon yesterday and saw some very nice cumtrails from the fellas at Whidbey Island.

cumtrails by WheezyPeezy April 20, 2018

Cum Train 

A row of males ready to cum while a female goes to each male and lets them cum anywhere they want till she gets every man to cum,hence a cum train

Did you hear Becka did a cum train with the hole football team

Cum Train by Timmy’s 3rd testical May 9, 2018