Your friendly local weather person says there's a 10% chance it will rain today, so you throw on your flip-flops and head out to enjoy a beautiful day. Next thing you know, you're running through puddles, trying to get out of a torrential downpour. Bad luck or bad weather person?

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Sources:
https://www.weather.gov/ffc/pop
https://weather.com/news/news/heres-why-it-rained-when-your-forecast-said-10-percent-20130816
https://www.forbes.com/sites/marshallshepherd/2015/11/27/do-you-or-your-meteorologist-understand-what-40-chance-of-rain-means/#e0adca725d56
http://journals.ametsoc.org/doi/abs/10.1175/WAF-D-15-0058.1