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perk 1. v. perked, perkÂ·ing, perks. v. intr. 1. To stick up or jut out: dogs' ears that perk. 2. To carry oneself in a lively and jaunty manner. v. tr. To cause to stick up quickly: The dog perked its ears at the noise. adj. Perky.
The kk acronym simply means okay or message acknowledged. It's the same as nodding in person or saying cool, gotcha, etc. It's common to see kk or KK as a text message abbreviation or when you're playing online games. Like other Internet lingo, kk might also be heard said aloud in person, as kay kay. Most of the time, texting abbreviations like this are meant to be lowercase, like lol (laughing out loud) or brb (be right back).