(Some of) you will be happy to know that last year I actually had an ejection over this very issue.
Batter's box lines are gone. Batter sets up with part of his foot in front of home plate...
Me: Batter, you need to get inside the box.
Batter: But there's no box.
Me: There's always a box.
Batter: Well if the lines aren't there how are we supposed to know where the box is?
Me: The box dimension is seven feet by three feet and if there aren't any lines, then it's my judgment if you're in it or not. But when your foot is in front of the plate I don't need a line to see you're out of the box. Move back about six inches and you'll be good.
Batter: Can you draw a line?
Me: No, we don't draw lines. Just move back about six inches so your foot isn't in front of the plate.
Batter: Well, if there's no line...blah...blah...blah...
Me: (Thinking, "Is this really the hill you want to die on"...) Batter, are you going to get in the box?
Batter: (Raising voice and acting pissed off, thrusts his bat toward me) Here! Draw a line and I'll get in the box!
Me: (With a big, roundhouse, ejection signal) You're gone!
Sorry, dude. You had three requests to get in the box. Instead of getting in the box, you chose to make an argument of it...you tripped my BS meter...buh-bye!