This episode marks the first appearance of Sheldon's internet video series, Fun With Flags, which would be a new recurring feature on the show.
The title refers to Leonard and Penny's decision to beta test their relationship before renewing it permanently.
Sheldon: You got to know how to hold 'em. You got to know how to fold 'em!
Bernadette: Who's Siri? Is he dating someone new?
Howard: Yes, his phone.
Bernadette: Is that cute or creepy?
Leonard: So, I've got a gunshot wound. That's pretty badass.
Penny: No, you've got a Reebok with a gunshot wound and an ouchie on your pinkie toe.