Top Definition
When you introduce someone to one of your friends, and they steal them from you.

Stealing them from you is defined by the stolen friend spending less time with you than usual, and more time with the friend doing the stealing.
Ste hangs out with Bryony. Ste introduces Xanthe to Bryony. Bryony now hangs out with Ste less in favor of hanging out with Xanthe. Xanthe is therefore a "Friend Thief".
by Ste_t July 07, 2008

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when you introduce 2 of your good friends to each other, and they both leave you behind and spend more time with each other
"Jim introduced chris to sophie, and they got on well. so well in fact that they left jim behind! Chris and sophie are both friend thiefs"
by chim chimmity October 07, 2008

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Introducing one friend to another, only find out that the two friends enjoy eachothers company more so than that of the original Introducer. Thus leaving the original friend of both, friendless.
John: hey Jake what are you up too?
Jake: oh just hanging out at my house, playing video games with Wally.
John: Why didn't you call man? You know I wanted to hang out tonight.
Jake: Well Wally was already here when I got home.
John: Wally is such a friend thief.
by jpwf August 19, 2009

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If you introduce someone to one of your best friends and they try to steal your best friend from you. They act nice at first then, once they are closer to your best friend they'll start acting like the bitch slut they are
Me: What are you doing tomorrow
Friend Thief: Me and (best friend are going to them movies)
Me: Can I Come?
Friend Thief: Sorry It's just us

What I'm thinking: Then why did you tell me bitch
by BadWolf337 May 01, 2016

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt