Penny admits to Leonard that she has commitment issues, which explains why she freaks out every time Leonard proposes to her. Leonard offers a novel solution by letting Penny propose to him whenever the timing is right for her.
Frodo, the Hobbit charged with destroying a ring full of evil power, collapses in exhaustion. Sam doesn't want to lose his friend to the power of the ring and does everything he can to insure its destruction.
Penny purposely ruins a good night with Leonard and explains that it's because she has commitment issues. Leonard promises not to ask her to marry him again in response.
Mom is tweaking her tone for the email to her son Axl, who is not talking to her. At first her tone is angry and probably won't be effective. She makes multiple revisions on her tone.