The Big Bang Theory: 10 Best Penny Lines

By Laura Holmes / August 17, 2015

7. "What Up, Shelbot?"

'What up Shelbot" Episode - The Cruciferous Vegetable Amplification Knock knock Penny.Knock knock Penny.Knock knock Penny. "What up Shelbot". After deciding his body is too fragile for the outside world, Sheldon interacts with the gang via Shelbot.