It is the phenomenon when a person remembers every detail of his scenario every time he is aroused and has an erection. It is a type of photographic memory that is only activated during an erection.
Zee has erectographic memory so he watches porn and studies for his exams.
The memory erasing ability that rum has causes one to have "Rum-Term Memory"
Jim and Rod are on the golf course. Rod askes Jim "what did you get on that hole?" Jim replies "Hmmm...I dont remember all my strokes. Must be I have Rum-Term Memory".
The ability to name, recognize, remember and/or recall every porno movie, picture, pornstar and moneyshot that you've ever laideyes upon. (The greater the volume, the greater the commendation.)
See: Moneyshot
Sir Spanks-a-lot confidently deleted the recently downloaded Young-Dum and Full of Cum.mpg #5c, starring Aurora Snow, as his pornographic memory informed him that it was already stored on his computer's hard drive; cluster#: 43,600; sector# 165; Size: 133,455,000 bytes, et al.