What does the verbal irony in this text suggest?
"Sleeping through the rooster's crowing was no problem," Jim joked with a yawn.

 - Jim slept well.
 - Jim slept poorly.
The text uses verbal irony, which involves saying one thing but implying something very different.
Sleeping through the rooster's crowing was no problem ironically suggests that Jim slept poorly. Jim was tired, so the rooster's crowing was clearly a problem.