Top Definition
(n). A calendar that should be utilized in every romantic relationship which documents the orgasms of each partner on a daily, weekly, and monthly basis. Should be kept underneath the bed.
I thought I was pissed off at my boyfriend but then I checked the cum cal and realized I came twelve times last week.... I feel bad, I was just upset cuz I haven't came in 2 days...You know how it is.
by cjezioro September 24, 2010
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