Nothing. Because rocks don't talk and geology's not funny.
Nothing you idiot, bananas don't talk!
What is the difference between a introverted engineer and an extroverted engineer? An introverted engineer looks at his feet when he talks to you. An extroverted engineer looks at YOUR feet when he talks to you!
M: I'm starting a rock band. Neighbor walks away. That is how you get people to leave you alone.
Whiskers on the rocks
Because they practice relative dating!
Stone deaf...
Gone private.
Because they're STONERS!