"Deze jas is niet stom."
Translation:This coat is not stupid.
In Dutch you can say that a piece of clothing is "stom", just as you can say in English that a piece of clothing is "stupid", or not "stupid" as is the case in this sentence.
Maybe you remember the blue/black, white/gold dress just over a month ago. It was often referred to as "a stupid dress" like for example here: http://www.stuff.co.nz/life-style/fashion/66827181/why-you-shouldnt-feel-bad-for-obsessing-over-that-dress
"In the span of an evening, this stupid dress - in every way a confection, manufactured by Tumblr and Buzzfeed - became the sole story of the day."