code: function switchPersonStr( str ) {
  	var switchPersonStrVerb = {} ;
  
  	return str.replace( /\s+|(i|you|he|she|it|we|they)\s+(\S+)(?=\s)/gi , ( match , pronoun , verb ) => {
  		if ( ! pronoun ) { return match ; }
  
  		var person = null , plural = null , switchedPronoun = null ;
  
  		pronoun = pronoun.toLowerCase() ;
  		verb = verb.toLowerCase() ;
  
  		switch ( pronoun ) {
  			case 'he' :
  			case 'she' :
  			case 'it' :
  			case 'they' :
  				return match ;
  			case 'i' : person = 1 ; plural = false ; switchedPronoun = 'you' ; break ;
  			case 'you' : person = 2 ; switchedPronoun = 'I' ; break ;
  			case 'we' : person = 1 ; plural = true ; switchedPronoun = 'you' ; break ;
  		}
  
  		if ( ! switchPersonStrVerb[ verb ] ) {
  			// Damned! We don't know that verb!
  			return switchedPronoun + ' ' + verb ;
  		}
  
  		return switchedPronoun + ' ' + switchPersonStrVerb[ verb ] ;
  	} ) ;
  }
docs: Switch a person, using a string