UFC superstar Conor McGregor might not have won his 2017 boxing bout against Floyd Mayweather Jr. but he did have his moments. The former MMA champion went to social media this week to troll his past rival.

McGregor jumped onto Instagram with a cringe moment from his August 2017 Mayweather fight and encouraged his 31.4 million followers to caption it.

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A few days ago, Mayweather seemed to fire the first shot by sharing a face-off moment from their 2017 promo run.

Despite holding his own for a few rounds, McGregor ultimately lost his boxing debut to Floyd.

This week, McGregor put a little respect on his name and his level up from entering MMA fighting to become a UFC mogul.