DM: "Ahead of you lies a labyrinth of some complexity. You will need to-"
Player: "I pull out my +4 wall smashing mallet and demolish the first wall in our way."
DM: "No, wait, not like that."
Player: "Mallet go brrrr! Haha!" proceeds to destroy every wall between the entrance and exit of the labyrinth.
DM: "ohno."