Residue, left on a toilet seat, usually in the shape of a "
Y" (reflecting the reoccurring placement of an unwashed
ass-crack, from one, or multiple persons), that collects over time, due to an insufficient cleaning/maintenance routine of the toilet in question; most commonly seen in gas station stalls. The composition of Bumslaw
may vary; the most common elements include:
poop, ass pubes, accumulated sweat resin (aka: salt
cream), hemroidal or vaginal medication residue, blood, lubricant, and fuzz from undergarments.