For those who complain that teens spend too much time in front of their phones, for one talented 17-year-old, the time was well spent.

Marcel Fernandes Filho recently broke a Guinness World Record becoming the fastest texter using a smartphone. In just 18.19 seconds, the Brazilian teen typed out the following 25-word message on a Samsung Galaxy S4:

The razor-toothed piranhas of the genera Serrasalmus and Pygocentrus are the most ferocious freshwater fish in the world. In reality they seldom attack a human.