A Forbes article reported that Melinda would pledge the hefty sum to promote gender equality in the U.S. over the next 10 years through foundations set up by the couple.

The news seemed to strike a chord with Kavanagh, who called out the mission from Gates, married to the man world's 2nd-richest person by the same publication, to “empower women” as perhaps a tad hypocritical.

"Nothing says equality like a wife spending her husband's money," Kavanagh joked, insinuating the cash Melinda would be splashing on the endeavor was in fact Bill’s and therefore defeating the object of her noble principles in the Irishman’s eyes.

The tweet went viral, being retweeted by UFC color commentator and podcaster Joe Rogan. What followed was a landslide of replies to the SBG Ireland trainer; some accused him of ignorance, while others agreed.

After the tweet went viral, Kavanagh experienced a surge in attention toward his Twitter account, and also the negative reaction, which, and triggered a response you might expect from the man who has nurtured motormouth McGregor from rookie fighter to UFC legend.

"Well I guess that tweet went viral with + 50k likes and + 5k new followers," Kavanagh wrote, before seemingly acknowledging his words may have hurt the feelings of social justice warriors.