Phrase commonly spoken by the infamous mr keen (chemistry teacher).
guy: mr keen, I got a 40 on your midterm! can I come after school and get help?
mr keen: your grade will be fine. keep it keen!
by Emmy_______ June 10, 2005
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Girls gets bored when guys are too nice.

You have to treat them mean to keep them keen!
That's why bad boys always gets the girl.
Guy: "Hey dude i really like that girl"
Dude: "Well then you have to treat em mean keep em keen"
by ThatGirlWhoNeverGetsBored June 18, 2017
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