Earth Breaker 

A guitar solo that when played it cracks the earth (can only be preformed by Sean (Slash) Tate)

That solo from "No More Tears" is a real Earth Breaker when Slash plays it

Earth Breaker by Sean Tate June 15, 2004

C-C-C-C-C-CONVO BREAKER! 

A Convo Breaker(or C-C-C-C-C-CONVO BREAKER!) occurs when something is said that results in a long, drawn out or otherwise awkward silence, effectively breaking the conversation.

(12:34)<Ternal-sempai> I can't remember the last time I played a game that induced catharsis.

(12:34)<Ternal-sempai> Can YOU??!?!?

(12:47)<Ternal-sempai> C-C-C-C-C-CONVO BREAKER!

C-C-C-C-C-CONVO BREAKER! by Rast Sekyd May 5, 2009

Thumb-Breaker 

A Thumb-Breaker is a more threatening version of a D.U.F.F.(designated ugly fat friend). Instead of just preventing you from talking to a girl a Thumb-Breaker (usually 250lbs+)will physically try to harm and or paralyse the persuer. Thumbs could be broken!

Hey man did you get her number yet? "Nah man her Fuckin Thumb-Breaker just kicked my ass in front of everybody!!"

Thumb-Breaker by Dat C/O N-Ger December 9, 2008

Heart Breaker

Somebody who breaks hearts.

Many Jenney is a bad girlfriend, she is a heart breaker.

Heart Breaker by AmeliaMackLion. March 23, 2018

Streak Breaker 

After a month or two, enough is enough. She is the the one that looks like the crack of your ass, typically found on bumble, that breaks the dam of pussy. Tough it through this dog, and the flood of whores will be close behind. Streak breaker.

Yeah dude. I got a bumble date tonight 25 miles from my house. Gotta break the streak. Streak breaker.

Streak Breaker by Mrrrk July 21, 2019

C-c-convo breaker

Used as an exclamation when interrupting someone else's conversation.

Person 1: "Hey how are you?"
Person 2: "Oh yeah, it was good, but-"
Person 3: "C-C-CONVO BREAKER!"

C-c-convo breaker by Laproject February 11, 2015

deal breaker 

a romantic cousin of the "shocker", the deal breaker involves delicately inserting your fist in the anus of your significant other. Also known as "5 in the stink"

Cindy said Nick was the most unbelievable lover she had ever experienced, until he gave her a deal breaker.

deal breaker by crazy legs #22 September 30, 2008