Jack Off Journal
A smelly log that a man keeps to remember every time he jerks off. It has dates, time, how good it felt, and how much cum he leaked.
'April 10th: Took 18 minutes. Got an 11. My brain was melting.'
'June 5th: Did it in my bed. Got a 9. My bed was soaked.'
'December 1st: Slept through it. Got a 2. My brain was dead.'