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1.
As seen in public bathrooms; the vast array of old, crusty dried snots that scumbags have wiped on the walls above urinals and/or inside stalls... sometimes resembling modern art.
When I was taking a dump the other day I picked a nice bloody one... I'm glad I was able to contribute to the booger art on the wall- which is starting to resemble a Picasso.
by Mosis August 07, 2007
 
2.
Small sculptures and wall pastings made from snot.
In the mens bathroom stall I saw booger art depicting a smiley face.
by Jim Gray October 22, 2007