If you've ever spent time on Japanese online video network Nico Nico Douga, you've probably seen young people do all sorts of crap. You've probably never seen anything like this.
The clip is about two minutes long, and features a young woman who shows off her new bathing suit. Stick around until the end to see how that turns out.
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Note: The viral ad is from Autoway Tire, the folks behind this clip, and encourages viewers to change their tires to avoid sudden blow-outs.