Toilet paper; used to wrap the gifts one leaves in the khazi.
"Dammit, I was cheek-to-the-seat when I realized there's no toilet paper!"
"Don't worry, I'll nip to the shop on the corner for some crapper wrappers"
"Hurry up, I'm bursting. Grab me a Mars bar when you're there, to replace the chocolate bar I'm about to drop"