16. It's winter. Yes, you'd think you'd have less excuses in winter because you spend more time in the house, but the truth is the cold and gray sap your motivation and you get less cleaning done than you do during the warmer months.
18. The house is too cold, so you'd rather stay in bed under your warm covers.
19. Your kids are sick. Not just sick, but plague-ridden. If you clean anything, it's just going to be smeared in germs shortly after, so why bother?