'The Big Bang Theory' recap: 'The Fetal Kick Catalyst'

On this week’s Big Bang Theory, Penny gets asked to sign autographs at a comic book convention that consists of only D-list stars and people like George Lucas’ dermatologist. Leonard thinks she should do it because it will be fun.

Leonard shows up at the convention excited with his change maker strapped to his waist. Penny isn't as excited especially after the first fan that approaches her table tells her that he loves her movie because it's the worst thing he has ever seen. He then insults her acting ability. The worst part, however, turns out to be when he tells Leonard to keeps the change on the $4.95 autograph, preventing him from using his new gadget.

Another fan asks for a selfie of Penny kissing him, which Leonard objects to. The fan becomes shocked that he is Penny’s husband. He doesn’t believe it even after Penny shows him the ring. A few more guys come along and they end up sitting on the floor to listen to Leonard tell the story of how he landed a “stone cold fox.” They come to the conclusion that she must be with him for his money but Leonard tells them that she makes more than he does, shocking them again.

Meanwhile, Amy thinks that she and Sheldon should invite guests over now that they are living together. Sheldon shoots down the idea but later surprises Amy by planning a brunch. He invites Stuart, Bert from the lab and a Romanian woman that lives downstairs, who doesn’t speak much English.

During the dinner, Sheldon accidentally reveals that this brunch is just a practice round. This insults Stuart, making him feel like a lab rat and not a real friend. Stuart gets up to leave but Sheldon stops him and apologizes saying he knows what it is like to be left out and that he is a valuable member of their social group. They end up bonding while Amy is left to clean up.

Over at the Wolowitz’s, Howard feels the baby kick which makes Bernadette’s pregnancy feel more real to him. He starts freaking out that there will soon be a baby in the house and he doesn’t feel ready.

Howard and Raj go out and buy a crib and take home a minivan to test drive. Bernadette gets upset that they went without her and she also doesn’t like the idea of driving a “mom” car.

Howard takes Bernadette outside and tries to sell her on the van. He shows her all of the award-winning features including the easy open trunk. He then tries to unload the crib and in doing so, he hurts his back. Bernadette takes a whining Howard to the ER with Raj in the passenger seat. Howard continues to try and sell her on the van while complaining about his pain. It isn’t until Raj puts Batman: The Animated Series on the minivan TV to keep Howard quiet that she is sold on the vehicle.