A ninja logger is a term common to online games and MMORPGs. The ninja logger is someone who says goodbye or goodnight, but then logs off too quickly for their friends to respond.
An unidentified person that shits without flushing. This designation is particularlyappropriate when they leave a solid oversized log of feces for the toilet's next patron to find.
"Hey dude, the Fantom Logger just destroyedthe shitter! You shoulda seen the size of that nasty sewer trout they left; must've been sitting there all day before I found it..."
One who takes a cigar cutter and puts it up their Vagina, then when one comes to have sex with them they get their dick cut off, since the logger would have an electronic device to initiate the cutting. Therefore the person with the cutter up their Vagina is a logger of dicks.
If you are too dumb to understand analogies, then go die.