Mirror Spock tells Captain Kirk that it is necessary they talk

Aboard the Constitution-class Federation starship USS Enterprise NCC-1701, Captain James T. Kirk went into Commander Spock's quarters. He said "Spock? Spock, are you there? Spock?" He found Spock lying on his bed and said "Spock!" Just then, a clean-shaven Mirror Spock came out with a phaser pistol and said "He cannot answer you, Captain." Captain Kirk turned to see Mirror Spock. Mirror Spock said "Forgive the phaser pistol. It is necessary we talk before you attempt to raise an alarm." Captain Kirk said "All right, talk. Start with who you are!" Mirror Spock said "It has only been a few weeks, Captain. Has the shaving of my beard rendered me unrecognizable?"