"The same clerk was there every day and always just turned her head and never busted me."
The film grossed $140M worldwide during its opening weekend, marking Johnson's best debut as a leading man.
The DC Cinematic Universe flick is set to to hit theaters on Oct. 20.
The actor believed putting the two characters in one movie would be a "disservice."
Johnson recently revealed that she will wrestle under the name Ava Raine when she makes her WWE debut.
Johnson considered Vin Diesel's public request for him to reprise his role as Hobbs a form of "manipulation."