Conor McGregor is preparing for his fight with Jose Aldo in the most unique way possible, sparring with ‘The Mountain’ bare-knuckle boxing style. Or at least that’s what he claims…

Check it out:

Today I had a bare-knuckle fight off a 180kg monster called 'The Mountain' I'd never fought, or even seen a man that big before.

A photo posted by Conor McGregor Official (@thenotoriousmma) on Oct 30, 2015 at 8:01pm PDT

Did McGregor and this man actually spar? Or was it just an Instagram prank? Give us your thoughts below.