MoFire
'MoFire' combines the official definition of 'mo' and the slang term of 'fire'. Mo means a short period of time, and 'fire' in this case means to be 'cool'. Therefore, being a 'Mofire' means to be very cool for a while, or have a 'cool' moment.
Wow, I can't believe he was brave enough to get that puppy out of the sewer! Totally a MoFire moment!