When a father goes off the rails kicking ass or obliterating a foe when protecting his son(s) and/or daughter(s) after they have been wronged in some way, referencing Mufasa’s brutal attack on the hyenas in The Lion King; an extreme version of “papa bear”
“Joe cheated on Cindy and dumped her, her dad found out and went full-on Mufasa on Joe’s ass!” (going Mufasa)
by ozzygcoverdale May 16, 2019