paint the canvas
to ejaculate forcefully upon an object/person
I told Gilbert to paint the canvas all over Nooch's eager face.
painting the canvas
Blowing your load all over her a woman's torso
Painting the canvas is my favorite contraceptive
Painting the canvas
When you are about to ejaculate during intercourse and opt to pull out and blow your load all over your significant other's torso.
Painting the Canvas is my favorite form of birth control.
Paint the canvas
To succeed in leaving fecal residue on the toilet bowl after a flush.
Be right back, I'm gonna go paint the canvas.