DD2 and her little friend, both 2 or 3, were playing (far too) quietly in our bedroom. When someone eventually checked, they'd smeared half a bottle of baby oil over the wallpaper, drunk a bottle of junior vitamin drops (a month's supply), and opened half a dozen condoms and shoved them down a radiator (they'd found some snakes and killed them, apparently).
That wallpaper bore the stain until we redecorated years later. I rang A & E in a panic about the vitamin drops and was told that oh yes, there would be side-effects, they'd both be bouncing with health for a couple of weeks 
Were you more emotionally attached to one parent over the other ?
bedspread and a nice long slit up a curtain 
