Similar to Destroy Dick December, Just jack it January entails that the individual must only "jack it" (Masturbate) with his/her (Gender Inclusive) free time. The challenge begins as soon as the little hand strikes 12 on January 1st. Many in the past have considered it to be a group activity as it begins on New Years day when many individuals are with friends and family.
Arjun: Man I'm so tired from destroy dick december
Diana: Get ready for round 2, a.k.a Just Jack It January!
by J_A_D_G December 11, 2017
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Just Jack January aka Blue balls month

Just Jack It January is the third part of "Torture Your Dick Months". If you didn't know it begins in November with "No Nut November", Then comes December with "Destroy dick December" and ends in January with "Just Jack January".

In Just Jack January you can not nut in a whole month but you have to masturbate a whole hour straight without stopping.
Guy 1: Hey Guy 2, do you wanna hang out
Guy 2: No sorry, i gotta {wank 1 hour} first. i gotta do just jack january
by marretheman July 15, 2019
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