Children, aged 2 and 4
Capable of complete and total anihalation of everything and anything, all in the space of time it takes for you to blink.
Unconfirmed but suspected posession by the devil or similar entity
Apparant lack of concern or respect for their belongings, home or mother
Shouting, screaming, tantrums and general akwardness all come as standard.
Also included at no extra charge occasional fussy eating, weeing in inappropriate places, inexblicapble disabling of electrical devices and grinding playdough into carpets and other fabric surfaces.
ffs