A guy who hangs around your girlfriend as a "friend" who is really just waiting for the day when you and your significant other are on the rocks. That is when he swoops in to make a move, as the comforter, supporter, and basher of her current bf. Women are oblivious to them entirely.
Oh you need to talk to Matt? Jeeze that guy is such a lurker!
by Torne September 22, 2005
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When you follow the conversation of two people who are your 'friends' on a social networking site such as facebook whilst not actually participating in the conversation. A digital version of eavesdropping.

NB: Anything you say to people on facebook through the comment system really isn't private.
Jane and Matthew were having a conversation on facebook. Oliver clicked 'See Wall-to-Wall' to read the conversation they'd been having. Oliver is being a lurker!
by Peter1122 December 31, 2010
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When you let a fart go, and it seems to follow you wherever you go.
Oh my god, I can't escape this lurker!
by tittyfuck69 April 27, 2009
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<noun> A term used to describe a person, usually male who "lurks" - appears out of random corners, happens to "bump into you" or always seems to be at the "right place at the right time" aka - where you are. A lurker tends to be the last person who left you a message in your inbox or sent you a series of pointless and annoying texts right after passing by you (it still remains a question how he got your number in the first place), and it is extremely rare for any girl to have the desire to respond to these pitiful cries for attention.

When you do have a face-to-face encounter with a lurker, conversation usually consists of really awkward tidbits that never develop into anything remotely meaningful or could also take on the form of an interview session, during which the lurker asks you a series of questions to which he clearly knows the answers to, as made evident through his history of extensive stalking. Encounters with lurkers leave all women with an incredibly overwhelming sense of awkward displeasure.

Tip: Women -Avoid lurkers at all costs ; Men - Never become a lurker.
"Yeah I thought he was cool, but he turned out to be a lurker"

"Ugh he won't stop calling me. What a fucking lurker!"

"That kid is such a lurker, it's disgusting."

by The Chase January 6, 2009
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Someone who is constantly on myspace looking at the same people that they don't know over and over again to see if they have new pictures, who their friends are etc. etc.

Lurkers often lurk in packs, to show their fellow lurkers their lurkees, and to show off their taste in lurkees.
Koala is such a lurker, every night she sits in front of her laptop on myspace, lurking people she suspects may be cooler or prettier than she is.
by panders September 27, 2005
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noun. When you are swimming and a Charlie Horse (aka a cramp) is not quite hurting yet, but it will flare up if you kick wrong.
"Holy shit, I just swam that whole practice with a lurker in each calf!"
by FloopyPirate98 January 12, 2017
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A fictitious burrowing organism of the Zerg race, belonging to the Starcraft universe. Lurkers are born from the metamorphosis of a hydralisk.
A swarm of overlords dropped a dozen lurkers in my base. No SCVs survived.
by SCV_Master December 15, 2008
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