1) A marker that is green.
2) To hide drugs (usually weed) in a fat Crayola marker. Usually done by students, especially in elementary school, middle school and high school because markers are fairly uncommon at schools and no one ever really pays attention to them.
1) "Dude, can I borrow your green marker?"
"Sure."
2) "Dude, can I borrow your green marker?"
"No, it's not a marker anymore."
by Minnesotasucks March 27, 2010
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