When Amy mentions the one problem with Raiders of the Lost Ark
, Sheldon vows to ruin something she loves as revenge. Meanwhile, Leonard finds a way to get Penny to do what she wants while Raj and Stuart make online dating profiles.
- Artistic License History: Sheldon's claim that "peanut butter wasn't introduced until the early 1900s" is false. Peanut butter dates back to the Aztecs. Presumably, Sheldon (who really ought to know better) is repeating the popular myth that George Washington Carver invented peanut butter.note
- Bait-and-Switch: Penny greets Leonard in a nightie and says she planned something special. Leonard starts to undress, thinking he's going to have sex, but then Penny opens her laptop, and there on the screen is Leonard's mother, whom Penny had told about how he's been whining about her to play on Penny's sympathies.
- Jaw Drop: Invoked by Sheldon when he dares Amy to tell him about the flaw in Raiders of the Lost Ark, saying "Here's my jaw; drop it." When Amy does tell him, his jaw actually drops, and she smugly closes it for him.
- Useless Protagonist: This is what Amy considers the big problem with Raiders: Indiana Jones' involvement in the plot doesn't change the outcome; if he were removed from the story it would end the same way.