smiler

noun2

1. •
   Someone who smiles.

   • Jenny hadn’t been a natural hugger, but she’d been a smiler, a handholder. — 2012
2. •
   (UK, slang) The mouth.

   • You're asking for a punch in the smiler!

noun1

1. •
   (slang) A fan of American singer and actress Miley Cyrus.

   • When she rose to the throne of the iTunes charts with her single “Royals”, she was met with some hateful tweets from Smilers (aka Miley Cyrus fans). — 2013