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A demeaning term for a 6 year-old, or a 6th grader. Used with terms such as, annoying, irritating, etc.
"God, what an annoying Sixlet."
"Don't be mean, you were one too you know!"
by The Noid November 29, 2007
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Can only be used if you are in a higher grade than 6th, used to call a six grader
"Six-lets are gettin smaller and smaller every year!"
by Mitchell Brown April 05, 2007
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