Final answer:
In 'Upside Down', the poet uses humor, specifically irony and satire, to shed light on a serious theme. This approach allows the poet to criticize certain characters and draw attention to underlying issues. The poet must carefully balance humor and seriousness to effectively convey their message.
Step-by-step explanation:
The poet employs humor in 'Upside Down' by using irony and satire to shed light on a serious theme. By ridiculing certain characters, the poet criticizes them and draws attention to the underlying issues. Humor serves as a technique to make the readers laugh and engage with the text, but also to convey a deeper message. However, it is important for the poet to balance humor and seriousness carefully, as excessive humor may distract readers from the thematic message.