Tropes seen in this episode:
- Green-Eyed Monster: Barney
- Precocious Crush: Opie has one on Thelma Lou. Barney is not pleased.
- Unrequited Love Switcheroo: Opie falls in love with Karen, but she doesn't return his affection. Later, Karen begins to miss the attention he gave her, but by then Opie has fallen for Thelma Lou.
