Here’s how the sentences can be categorized:
**Irony**
- Thanks for picking today, of all days, to get stuck for twenty-six minutes.
- “I would never make such a silly mistake.”
**Not Irony**
- Janelle ran the half-block from the subway station to the office.
- “Has the new supervisor come around yet?”
The sentences identified as irony reflect a situation where there is a contrast between what is expected and what actually occurs (such as Janelle’s mistaken belief about the supervisor's start date).