A happy 80th birthday poem is a poem that is written to a person on their 80th birthday. This poem can take any form as long as it wishes the person a happy 80th birthday. An 80th birthday is a very special birthday as the person celebrating has lived longer than the average American life expectancy of 78.7 years.
An ode is a unique and unexpected way to wish someone a happy 80th birthday. These classic Greek poems address a person directly, which is appropriate for a birthday celebration. Because odes don't have to rhyme, they are relatively easy for even an amateur to write.
Because the person having the birthday has lived so long, the poet should consider writing an epic poem. An epic poem is a long piece that typically describes the heroic deeds of an individual's life. Epic poems are narrative in structure and traditionally have a serious tone.
If the writer really wants to give the birthday celebrant a special surprise, they can write a sonnet. Writing a sonnet is more complicated and difficult than writing the previous type of poems, as sonnets have a very specific structure. Sonnets must contain fourteen lines with the rhyme scheme ABAB CDCD EFEF GG, and the lines must all be in iambic pentameter.