the act of applying peanut butter to the anus (around the exterior or actual insertion) and having a pet (usually a dog) to lick it out. The goal of this is to result in pleasure for the peanut sludger. It is also considered to be a gross abuse of animal rights.
Someone call PETA! I heard that Dean is a peanut sludger!
by Truth's Razors September 13, 2010