sheeting on the bed.
poopin on da bed, specifically one with a white sheet.
William: watchya doin?
Bob: oh nofing, just sheeting on the bed.
William: WHAT?!?!?!?!?!?! stop it right now or i'll slap ur butt off!
Bob: oh nofing, just sheeting on the bed.
William: WHAT?!?!?!?!?!?! stop it right now or i'll slap ur butt off!