When one person has stolen another's style, lingo, or fashion accessory. You may refer to that person as a cookie stealer, cookie eater, or cookier. It is derived from the term cookie cutter. Usually referring to houses along the same block that resemble each other.
Yo dude that kid definatly cookied my cut off chords!

Yo fuck off cookie stealer you know you got that off me!
by Barney C April 25, 2008
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When somebody who is awesome, really cool, (insert compliments here), steals somebodies cookies
I stole one cookie, and I got named a cookie stealer for life!

~addi
by Cookie stealer March 23, 2014
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