Definitions by theAdKid

biological graffiti 

Any conglomeration of spit, skeet, urine, and scat(any bodily fluids and/or solids) in a public area.

Neal can look past the potleafs and the initials scribed into the stall door. But he could not pretend the toilet seat wasn't littered with biological graffiti.

biological graffiti by theAdKid February 6, 2009