Top Definition
someone(preferably a creeper) who checks out other people's myspaces more than 10 times a day and doesn't leave comments or any indication they were even there; lurkers must be sly. they may also know personal information about the people they be lurkin'.
Timmy: "dude Greg knows about my plans this weekend and i haven't talked to him in a month."
Johnny: "no shit. Greg is such a myspace lurk. gotta watch out for him"
Timmy: "fucking lurker..."
by alinaaa February 12, 2007

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