A Ruiner is a person who habitually exhibits a desire to spoil or ruin things, often focused on a particular theme. Different from a hater in that a ruiner tends to hold deep, genuine, and long-lasting animosity toward their target which can reach obsessive and psychologically unsound levels. Ruiners have a tendency to latch on to specific people, whether they are famous or not, and perform stalking-like behavior. Ruiners who are members of a subculture such as a fandom, may paradoxially focus their hatred on their own topic of interest and attempt to throw wrenches in it or spoil the enjoyment for other people.
"Gary just tries to spoil everything whenever people talk about that new band, he can't stand its existence. What a ruiner."
by Mr. Murphy October 1, 2005
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dude I was listening to ruiner on repeat about 60 times yesterday. God I love this song
by nin fan April 30, 2006
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To be that guy who shows up in the background of photos usually being an idiot. Also so known as The Onifer
1) The Ruiner showed up in a tree in the back of our wedding photo!
by Jeighsunne January 30, 2009
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anyone who spoils a good time, breaks up a party, or affects your life or your situation in a negative way. Often times they are synonymous with downers, or party "poopers" for you elderly people.
IF you are partying in your house and having a great time with your friends, and another friend walks in and proceeds to be a downer and does nothing but complain and spoil the mood they are being a RUINER. Feel free to call them on it.
"You are being such a ruiner right now"
by Meghan Murphy June 8, 2006
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A ruiner is a way of fingering a girl using 3 fingers, two in the vagina and one in the anus.

The ruiner is made using your index finger, middle finger and your little finger with your ring finger bent inwards.

The Ruiner - Two in the goo, one in the poo.
Two in the pink, one in the stink.
I used the ruiner last night, she screamed so loud she woke the dead.
by Ryan Pagden October 1, 2007
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someone who is unbelievably perfect; ruins your image on how most people are; makes you believe that most people are unworthy because there is someone like him/her around
Darren Criss, Logan Lerman, Andrew Garfield, Joe Walker, Charlie McDonnell, Life Ruiner
by Permanent Rose May 10, 2011
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