Top Definition
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.
by theAdKid February 06, 2009
11 Words related to biological graffiti

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×