When gatsby tells nick that he is "trying to forget something very sad that had happened to me a long time ago," why does nick have to restrain his laughter?

Match the description to the word. 1. aabb rhyme satirizing someone assonance 2. addressed to something nonliving or nonhuman clerihew 3. part for whole; whole for part personification 4. repetition of vowel sounds in accented syllables sonnet 5. anapestic comic verse form alliteration 6. fourteen lines of iambic pentameter limerick 7. repetition of initial sounds metonymy 8. repetition of final consonant sounds in accented syllables apostrophe 9. three stanzas and an envoy consonance 10. human attributes applied to something nonhuman ballade