Can you give a summary of the pigman?

Paul and John, two very different high school sophomores, become unlikely friends through their shared prank of repeatedly calling a man named Mr. Pignati, an elderly, lonely man, with increasingly outrageous lies. When they finally meet Mr. Pignati, he's surprisingly kind and welcoming, inviting them into his chaotic, eccentric home filled with unusual animals and cherished memories. Their friendship with Mr. Pignati blossoms, offering both boys a much-needed escape from the pressures and boredom of their lives. Mr. Pignati shows them genuine love and acceptance, a stark contrast to the superficiality they experience at school and home.

However, their innocent friendship takes a tragic turn. A disastrous party, fueled by their recklessness and youthful indiscretion, leads to the accidental death of Mr. Pignati's beloved pet monkeys. Overwhelmed by guilt and unable to cope with their actions and the resulting loss of their friend, Paul and John retreat into their previous selves, highlighting the devastating consequences of their immature behavior and the irreversible nature of loss. The story ends with a somber reflection on their experience, emphasizing themes of friendship, responsibility, grief, and the painful transition from childhood to adulthood. The "Pigman," Mr. Pignati, becomes a symbol of innocence and vulnerability, tragically lost due to the boys' actions.