Raj: "None of our gods have abs like that."
Howard: "Yep, that's the last Jew who did sit-ups. And look where it got him."
Amy: "Sheldon, is it possible that your foul mood -- or, to use the clinical term, bitchiness -- is because your mother isn't making you a priority?"
Sheldon: "No. Or, to use the clinical term: 'nuh-uh.'"
Sheldon: "Yes, Penny has a lot of money tied up in promiscuity futures."
Sheldon's mom: "There's no harm in trying something new."
Sheldon: "There's a lot of harm in trying something new. That's why we test out drugs and cosmetics on bunny rabbits."