use Parse::RecDescent;
use Data::Dumper;

my $lexer = new Parse::RecDescent q
{
    lex:    token(s)

      token:    /(I|you|he)\b/i    <token:PRON>
          |    /(is|are)\b/    <token:VERB>
         |    'dumbest'    <token:ADJ>
         |    'Bill-loving'    <token:ADJ>
         |    'clearly'    <token:ADJ>
         |    /the\b|a\b/    <token:ARTICLE>
         |    /\w+/        <token:WORD>
         |  /\S+/        <token:PUNCT,OTHER>
};

my $tokens = $lexer->lex(join "", <DATA>);

print  Data::Dumper->Dump($tokens);

__DATA__

You are clearly the dumbest, Bill-loving script-kiddie I have ever seen!