Sean O’Malley goes off on ‘mentally weak drug addict’ Conor McGregor: ‘He’s a b*tch’

Sean O’Malley is not trying to hear it from Conor McGregor.

The reigning UFC bantamweight champion tore into McGregor on Monday after the former two-division champ quote-tweeted a post about O’Malley’s prior drug test failures for ostarine with a laughing crying emoji.

In the original post, O’Malley discussed on his podcast a recent study sent to him by UFC drug-testing czar Jeff Novitzky that explores whether ostarine can be transferred through sweat...