In the 2019 Joker film, after finding out that his biological father could be Wayne, Joker arrives at the Wayne Manor’s front gate, where he teases a young Bruce Wayne.
He was then interrupted by a younger Alfred, who told him to leave. After refusing Joker’s wants to meet Thomas, the Joker grabs Alfred by his collar, and tries to choke him for a few seconds, before the Joker spared him and ran off. This is all while being outside a gate, against a butler whose life-long job is apparently to protect Bruce. To make things more embarrassing for Alfred, he was manhandled in front of a younger Bruce.
How is it possible for a malnourished, anorexic Joker to be able to physically dominate a seemingly well-fed, mentally, physically and financially superior butler in Alfred, who at the time, was much younger (and so theoretically stronger) than most interpretations of the character?