"The grumpier you are, the more a**holes you meet." - Perfect for all constant grumblers, "always on the wrong foot" get-ups and self-proclaimed unlucky people. You can counter the daily madness with a good saying! Whether on a hoodie, office coffee mug or as a poster - this statement is guaranteed to make you laugh (or at least think).
So, take a deep breath, smile and give your permanently grumpy colleague the perfect coffee mug. And who knows, maybe people will be a bit nicer?