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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 September 30, 2005
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A great song by Nine inch Nails, off the album The Downward Spiral
dude I was listening to ruiner on repeat about 60 times yesterday. God I love this song
by nin fan April 29, 2006
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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 07, 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 01, 2007
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