Penny: Hey, are you still hanging out with Bernadette tonight?
Sheldon: Yes. And we're going to prove that we don't need alcohol to enjoy ourselves.
Penny: Oh, good for you.
Sheldon: Or caffeine, tobacco, sushi, soft cheese, processed meats and jacuzzis, which can all be harmful to an unborn baby.
Penny: No honey baked ham in a hot tub, got it.
Sheldon: Oh, no bubble baths either. They can increase the risk of a urinary tract infection.
Leonard: Okay, have fun.
Sheldon: Oh, and no swordfish, king mackerel, shark or tilefish, which are all high in mercury.
Leonard: We're leaving now!
Sheldon: Oh, and no contact with guinea pigs or hamsters or their droppings, uh, no-no cat litter boxes, no paint fumes.
Penny: Okay, we're leaving, love you, bye.
Sheldon: Boy, do I love restrictions.