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Saying something really shitty, then fake laughing and saying "Just kidding, loooooooove you!". Originated with a player on the Fenrir server in the game Rappelz.
LalaLady just loves lala-ing people, but it's really annoying.
by somekidwithakeyboard November 01, 2011
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When you let someone think they've won something for five minutes, then reveal they actually lost.
A: "Did you win an Oscar last night?"
B: "I thought I did, but they were just La La-ing me."
by Nanuk-LAR February 27, 2017
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