An ass canvas is a toilet bowl. It can also be anything you decide to release the art of a bowel movement unto but primarily the bowl of a toilet.
by Tayne Morano April 27, 2020
Get the Ass Canvasmug. When you are about to ejaculate during intercourse and opt to pull out and blow your load all over your significant other's torso.
by thegreatretailcaper July 23, 2016
Get the Painting the canvasmug.