mackarangeejeezerlewheezler
a person who’s always trying to be cool but never actually is
'He’s a mackarangeejeezerlewheezler. He says he’s cool, but no one believes him.'
'My brother is a mackarangeejeezerlewheezler. He tries to be cool but fails at everything.'
'She’s fake and tries too hard. A total mackarangeejeezerlewheezler.'