Former UFC featherweight champion send a not-so-subtle shot at former foe Conor McGregor via Twitter on Friday, calling the Irishman out for his complaints about doing fight promotion while training.

Training here in Vegas last night. Because some of us can train while still promoting the fight. @ufc @Reebok

— Jose Aldo Junior (@josealdojunior) April 22, 2016

Aldo, who reigned as champion from for four years, was able to successfully train and promote his fights during eight title defenses and even accompanied McGregor on a 10-city, 11-day long world tour in anticipation of their fight at UFC 189.

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In McGregor's defense, however, Aldo has never fought more than twice in a year while McGregor, if he happens to fight at UFC 200, would be taking his fourth fight in the last 12 months.

But a good burn trumps reality 100% of the time.