Parade Ruiner 

A fat or ugly cheerleader or baton/ flag twirler wearing a short skirt, tight pants, or a leotard, Usually marching in a parade.

"This marching band is pretty good."

"Nevermind, all the baton twirlers are parade ruiners."

-or-

"This parade is full of parade ruiners."

Parade Ruiner by Doublewolf October 23, 2009

pic ruiner 

A photograph in which one person looks like shit and therefore brings down the overall quality and potential of the memory.

Duder 1: "Whoa dude your girl is looking hot in this club pic. Why come your ass is all sweaty and looking like doo doo?"

Duder 2: "I know! Fuck! It had so much potential."

Duder 1: "Way to go you pic ruiner."

pic ruiner by westfalia February 9, 2010

fun-ruiner 

A person who sucks the fun out of anything!

Don't listen to Sally we should totally buy a llama for the apartment! She's such a fun-ruiner!

fun-ruiner by Every Guy In The World! May 6, 2011

Friendship Ruiner 

Someone who ruins a good friendship.
In some scenarios the friendship ruiner is of the opposite sex thus "bros before hoes" or "chicks before dicks"

Douche, satan, bad person, hoe, Friendship Ruiner

Friendship Ruiner by montana5 April 23, 2015

movie ruiner 

1. someone who allways tells you what is going to happen in a movie, or on the next episode of a show.

2. someone who accidentially tells you what is going to happen in a movie, or on the next episode of a show.

"charlie is gonna die this episode." said josh
"you are a movie ruiner!" said danny

movie ruiner by Sir2490 June 7, 2007

bit ruiner

In the world of radio show pranks and stunts this is the "hardcore fan" that calls in or more commonly, posts on a fan message board, and explains to the entire listening/viewing audience the "magic" behind the bit. This in turn takes enjoyment away from the intelligent listeners who are able to discern between real and fake. Often the specified "fan" has an inordinant amount of time on his or her hands for research or long-winded diatribes describing any discrepancies in detail. The bit ruiner often sees their show as attempting to gain publicity through dishonest means.

Note: This could also apply to wrestling or other such "in-universe" type real-life based fiction.

"You are a bit ruiner, can't you just go with it and enjoy the show?"

bit ruiner by thefirebuilds July 24, 2007

Rectum Ruiner

Similar to a Shit Stabber however these kind of homo's ruin the rectum region.

Alan: Was that alright for you?

Eric: Orrr nooo your such a rectum ruiner... i'll be shitting for days!!

Rectum Ruiner by Eric The Bandit January 3, 2012