Continuity mistake: In the beginning, when Billy is talking to the bum (who later turns out to be Tawny), the bum has a glove on his right hand. When he reaches his right hand out to Billy and Billy gives him a subway token, there is no glove. It's back in the next shot.
Superman/Shazam!: The Return of Black Adam (2010)
1 mistake
Directed by: Joaquim Dos Santos
Starring: James Garner, Zach Callison, Danica McKellar, Josh Keaton
Black Adam: You fight for the Wizard?
Superman: I fight for those who can't fight for themselves.