Sheldon: No I should apologize. I never realized to what extent our friendship was a burden to you.
Leonard: That is not fair. I complain about what a burden it is at least once a month.
Sheldon: No, no, no. Let's not sugarcoat this. You find me finnicky, pedantic and annoying.
Penny: No, he doesn't.
Leonard: I have actually used those exact words before. In that order.