Some people find it amusing when a stranger sends wrong number text, but others consider it a waste of time. When they receive texts like these, some people ignore them and continue with their work, but others will actively go out of their way to let the sender know they have the wrong number.
This person used their quick meme-making skills to come up with the best response possible. Let that be a lesson to you, Robin. Don’t ask Batman to come in at 2:30 and cover someone else’s shift! First of all, Robin is Batman’s subordinate and doesn’t give orders to the Dark Knight!