In Cape Cod, a swimmer was bit on the legs, and scientists believe the culprit was a terrifying great white shark.

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OOD DAY FOR:

Nostalgic sleepyheads
An online retailer introduces an officially-licensed Tetris alarm clock that features falling bricks that form numbers when the hours and minutes change, as well as the ubiquitous video-game song as the alarm. [Tecca]

One lucky violinist
A Stradivarius violin likely worth millions of dollars is turned into a Swiss lost and found, and later finds its way to its rightful owner. [Huffington Post]

Outsmarting teenagers
A new study finds that generic packaging on cigarettes could lower the rates of teen smoking, as impressionable youngsters view the non-branded packs as less cool. [Jezebel] 

BAD DAY FOR:

Selachophobics
A swimmer is bitten by what is believed to be a great white shark off a Cape Cod beach. [Gothamist]

Hungry frequent fliers
A passenger on an Air Canada flight is served a sandwich containing a sewing needle — not unlike the ones previously discovered on Delta Air Lines flights. [Consumerist]

Italian insults
The Italian Supreme Court rules that telling a man he has "no balls" is a crime punishable by a fine. [GlobalPost]

For more winners and losers see: Good day, bad day: July 31, 2012