Similes are a specific type of metaphor that use the words as or  like to make a comparison; a simple metaphor states that  something is something else.    For example,   Bob ran like the wind. This is a simile.
Born in Gothenburg, Sweden, PewDiePie originally pursued a degree in Industrial Economics and Technology Management at Chalmers University of Technology. In 2010, during his time at the university, he registered his PewDiePie YouTube account.
Since 15 August 2013, PewDiePie's channel has been the most subscribed channel on YouTube, being surpassed briefly in November and December 2013 by YouTube's Spotlight channel. Holding the position since 22 December 2013, the channel has reached over 39 million subscribers, as of September 2015.