Fudge's Birthday Party
Fudge's birthday party is an example of situational irony because when all the mothers come by to drop off their children, each one makes a promise that the kids will be fine despite the behavior issues they clearly have. This does not turn out to be the case; not a single one of the children behaves well at the party, causing chaos that drives Peter, his mother, and his grandmother crazy. Ironically, the true events of the party did not live up to the parents' promises.
The Lock
When Peter's father puts the lock on Peter's door, he puts it up very high where Fudge cannot reach. This lock is specifically meant to keep Fudge out and protect Peter's privacy, something that is very important to him. It is ironic, then, that Fudge manages to undo the lock anyway, breaks into Peter's room, and swallows Dribble. This lock on Peter's door likely tempted Fudge even more to sneak in.
"Eat it or wear it!"
After Peter's father punishes Fudge for not eating his food with some harsh discipline, "Eat it or wear it!" becomes Fudge's new favorite phrase. It is ironic then, that this phrase was what forced Fudge to behave, but yet later, he uses it as a way to misbehave again. At lunch in Hamburger Heaven, Fudge dumps his dish of peas over his head and shouts "Eat it or wear it!" This shows that he has taken this disciplinary phrase and made it his own.
