1 definition by Schlife

Facebook Instant Messenger. Instant messaging in the social networking website called Facebook. It is commonly used to talk with people you may not want or feel like texting with. It is an informal conversation with others who you may not know very well as well as your good friends. It keeps you up to date with activity of the website which incorporates the facebook world to the user.
FIMing is the act of using FIM. It has become a popular term at San Diego State University where it originated.
Tommy: "I don't have the balls to call a girl so I will go on FIM and hopefully I can break the ice"
Fred: "that might work because you are a bitch"
Tommy: "thanks, but I might get some from it"
by Schlife May 13, 2008
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