The liek comes from a misspelling of like, while the omgz comes from a weird z-addition of omg which stands for oh my god or oh my gosh. Usually used by people who slam their heads on the keyboard and cannot spell for shit, e.g. valleygirls, preppy people who type in sticky caps, or 12-year-olds.
<girl one> liek omgz diz guy spred a rumer abut meh..,,,
<girl two> omgzzz!111 wut a meenee!!11
<girl one> i nooooooo
<girl two> i no u shud haff sbex wiff his gf hed get reeel mad!111 majer paybek
<girl one> wowww liek omgz u r teh so smaert!111 thx babiiiiii
by Alanax0rz May 23, 2004
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1) Lamers who can't spell "Like, Oh my god!"
2) Pros that make fun of lamers who can't spell "Like, Oh my god!"
1) ILIKEPENIS61616: LIEK OGM U N0BZ ROFFLES I PRWN J00!11111111
2) GoSuAr: liek ogm stfu
by Khaos May 28, 2004
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From pokemon ;

4chan 'btards' exploited them XD
"SO, I hrd u liek mudkips?"
"yeahz they pwn"
by Annakins March 6, 2008
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An expression of disbelief or surprise, warped and shamelessly mistyped to the point of utter hilarity.
"omfg steve liek wh0a, ur so gei. gei gei gei, ur wife is reely ur huzban"
by Ghleanna October 22, 2003
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to like eggs. But in a meme way.
youtube.com/watch?v=5WwOZgPQwyU around 00:35 Steven Hawkings use it. "I liek eggs"
by iliekeggs May 31, 2015
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"being watched like a hawk"
An expression for a paranoid feeling of being monitored constantly by moderators on an internet message board.
-teh modzis watch liek a hawk!!1!
-stfu n00b!
by grandmastah K April 28, 2003
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mur liek is salvation in the form of an eight character phrase. In olden days, it was significantly more potent than today. In ages before man, it was accidentally muttered by a creature of the time; the end result is known as the ice age. It was also reportedly responsible for the Tower of Bablyon and Conan O'Brian's horrible sense of humor. Today, however, it has lost it's potency, and only has enough strength to restore a conversation from boredom to hilarity. One must still use the word with caution, however; sometimes it kills babies.
<n>: so i was on myspace the other day ^.^
<Suspyre>: myspace
<Suspyre>: mur liek
<Suspyre>: cryspace
<Suspyre>: LOL
<Slayerrr>: LOL
by JESUS CHRIST ALMIGHTY July 11, 2006
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