Finger nail paint is the least of your worries especially when some five year old cuts an air biscuit after two bags of peanuts....Gaaak!
I can relate. Sat behind a cranky 3 yr old on the way back from Mephis Sunday night. Temper tantrums, kicking my seat, crying, yelling - parents threatening to beat the crap out of him, but powerless to do so on a crowded aircraft. Oh, it was memoriable.