Shit that gets backed up in your colon and lower intestines as a result of neglecting your need to take a dump. Usually back logs are characterized by taking a dump, then about 10 minutes after you get off the toilet, you have to go back and take another dump that is roughly equal in size the first dump. Back logs are generally not healthy and are detrimental to regularity in your bowel movements.
by LazySlacker June 19, 2005
'Back- log', refers to the amount of time that you have not masturbated for and so you have a 'Back- log' because eventually it will all come out. :)
Chris: Oh dude, i'm hating this holiday - a whole week of Back- log
Simon: Yeah, tell me about it, i'm gonna have a huge one when i get home
Simon: Yeah, tell me about it, i'm gonna have a huge one when i get home
by asdqwezxc August 04, 2011