It was a meme on the Penny Arcade forums for a while. (Damn it tvtropes!)
I came over fairly early on that wave. Amazing way to kill time on a security night shift.
"When you cut your finger, I do not bleed." Response of a man who lived on the outskirts of a concentration camp.
A-HYUK!
I honestly don't even remember. And that saddens me.
360 Gamertag: Electivirus. 3DS friend code: 5412-9983-8497. PSN ID: Electivirus. PM me if you add me on any.
Proud Canadian
I got linked here from cracked, which I got linked to by another wesbite. Hmm...
If you don't like a single Frank Ocean song, you have no soul.
Small things here and there. Probably my earliest exposure was Superpowered Evil Side trope page. After that I hooked up on tropes but not until a year later did I manage to find a way to add my own information to add to the overall body of knowledge, then I became a full-blown addict.
Sorceress Bookwench
I was on bulbapedia, which linked me to Hot Skitty-on-Wailord Action.
Everything happens for a reason. The reason is a chaotic intersection of chance and the laws of physics.
"In distress", my ass.
Not that some need more reason to dislike Megatokyo, but their forums were what got me here. Especially in the comic forums, some folks there love to link to tropes and ruin the lives of the overly curious. 
Banned
I was depressed and I was looking for motivational quotes. I found De Terminator so I read about it. I found references to most of my favorite anime characters, and so my Wiki Walk began.
[[User Banned]]_ My Pm box ix still open though, I think?
Pika is the bombchu!
I can't remember. Maybe it was an annotation in a xkcd strip. Maybe it was a link at the Fiveminute.net forum.
mudshark: I don't expect Nate to make sense, really.
Some thread on Game FA Qs, I believe.
I had just finished watching Buffy The Vampire Slayer, and I was reading about Season 7 on the IM Db forums. Then someone started complaining that the uber-vamps were much more easily beaten in the last episode than before. As a response to that post, another user linked the trope: Lowered Monster Difficulty.
And that article had many many links
, so I got hooked instantly. This was around march this year.
edited 11th Dec '10 4:38:48 AM by Sati1984
"We have done the impossible and that makes us mighty." - Malcolm Reynolds
Running a google search for Brother–Sister Incest
It had been mentioned on the Game FA Qs forums, but didn't bother to check it out. Then one summer afternoon, I got bored and decided to visit the site. And the rest is history.
edited 16th Dec '10 4:52:03 AM by strawberryflavored
Also known as Katz
From a friend. Or actually more of a frenemy.
Space Wizard
Back when /tg/ was good there was a thread about what an incredible timesink TV Tropes was. Being made curious because of all the agreeing responses I wanted to convince myself. At first the Trope names irritated me, but after looking at my tab bar and the time spent... well I guess we all went there...
edited 16th Dec '10 6:30:11 PM by Lock
Programming and surgery have a lot of things in common: Don't start removing colons until you know what you're doing.
Thou errant flap-dragon!
Almost a year ago, I didn't know what Mary Sue was. Google led me here. I clicked on a few too many links and I'm still stuck here.
Warm hugs and morally questionable advice given here. Prosey Bitchfest
The Golden Girl
I first saw it when someone on a Guild Wars forum was discussing anime, and they linked to the Cute Little Fangs article. I think there was only a handful of articles about anime back then compared to now.
Then, waaaay later, I think I tried to google Kuudere or something and I was shocked how much the place had changed. But I didn't make an account until way later.
Shine
Only Sane Fox
A friend provided me with a link over AIM a couple of years back. I've been around ever since. He's been edit-banned for going on a rampage in WMG.
Accidental mistakes are forgivable, intentional ones are not.
IJBM Refugee
Falconfly linked me here from a forum.
IJBM lives on here! Sign up!
"In distress", my ass.
I clicked on a few too many links and I'm still stuck here.Arguably, one is "too many".
For about six months, any time I googled a book, film or tv show, I ended up on TV Tropes. I never really looked at it, I would just think 'what's with all the blanked-out bits?' and find it on The Real The Other Wiki. I think after a while I ended up clicking on some link and thinking 'huh...', at which point my life became an xkcd picture, but I can't remember which one.
I was looking for a Youtube video a friend made called "Why Chuck E. Cheeses Sucks" and ended up getting a link to Suck E. Cheese's. I was not a nerd before.
That link single-handedly got me into nerdiness.
A link to Load-Bearing Boss from a stub on The Other Wiki about the exact same topic. One of my first edits that day (about LotR) even got the privilege of being deleted and snarked at on the talk pages soon after
. It probably took me three days and a hundred simultaneous tabs during most of it before my browser was loosed from the site's clutches.
Minister of Propaganda
Just kinda wandered into here from another forum. Browsed through the Applied Phlebotinum page, trying to make sense of it all. Then I saw the rest of it, and I was sold.
Symbiote Kitty
Jeez, it seems like it was so long ago! I think I was looking up something about omnimon, and I happened across this page. I was hooked permanently.
A friend linked me.
The rest is history.