People who defended Conor's loss against Khabib used the argument that Mcgregor was already rich at the time and wasn't motivated, and stated that "Motivated McGregor" would destroy Khabib. People were so amused by this that they started using the term as a joke to mock McGregor fans, often using the term to describe McGregor in an almost Godlike way.
Motivated McGregor would knock out Mike Tyson with a 360 tornado kick in 5 seconds of the first round.
The use of the music of band My Chemical Romance as motivation. They can be used as motivation for literally anything, from something as simple as working, to something completely mental/ seemingly impossible.
Person 1: We got given so much work this week! How on earth did you finish it all??
Person 2: I just used my Mcrotivation, you should try it!
Person 1: *revives their emo self*