Smoking hot administrative assistant who makes up the thin line between loving your job and quiting.
I wasn't going to come to work today, but with jackstack around, it aint so bad.
by Beeyo October 16, 2007
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A large stack of porngraphic magazines that one would use to masturbate to or jack-off to.
My girlfriend found my jackstack and wants me to add some lesbian magazines to it.
by Dan Brooks November 21, 2007
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